What is the 2015-2017 GMC Yukon XL Takata Passenger Airbag Inflator Rupture Risk (Recall 174 / NHTSA 21V-050)?

Certain Yukon XL vehicles were equipped with Takata front passenger airbag inflators that can rupture during deployment due to propellant degradation from long-term exposure to heat and humidity. Owners may have no warning before a rupture event, which can send metal fragments in… Severity: critical.

2000-2024 GMC Yukon XL Problems: 22 Issues Every Owner Should Know

2000-2024 model years · 1,670+ owner reports · Updated May 2026

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According to Au7o's analysis of 1,670+ owner reports, the 2000-2024 GMC Yukon XL has 22 documented known issues, with 6 rated critical. The most serious are Brake Line Corrosion and Failure (GMT900 Platform) ($600-$2,000 repair), 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss) ($250-$900 repair), Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings ($900-$3,200 repair), Active Fuel Management (AFM) Lifter Failure and Tick ($1,500-$4,500 repair), Steering Column Lock Actuator Click and Binding ($300-$800 repair) and Front Hub Bearing and ABS Wheel Speed Sensor Corrosion Causing Unwanted ABS Activation ($180-$900 repair). The most commonly reported issue is Brake Line Corrosion and Failure (GMT900 Platform) with 420 owner reports. Across all issues, repair costs range from $50 to $4,500. DIY maintenance guides at au7o.io.

All 22 Known Issues

When Issues Typically Appear

Transmission Torque Converter Shudder (8L90/10L80)

9K-30K

AC Compressor and Rear AC System Failure

24K-80K

Intermediate Steering Shaft Clunk and Binding Over Bumps or During Turns

30K-140K

Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings

40K-120K

Instrument Cluster Stepper Motor Failure Causing Inaccurate Gauges

50K-140K

Door Handle/Linkage Failure (Exterior Handle Pulls but Door Won’t Open)

50K-160K

6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss)

60K-160K

Front Hub Bearing and ABS Wheel Speed Sensor Corrosion Causing Unwanted ABS Activation

60K-170K

Cracked Exhaust Manifold Bolts / Manifold Leak (5.3L/6.2L V8) Causing Cold-Start Tick

60K-180K

Knock Sensor Water Intrusion Under Intake Causing Check Engine Light

60K-180K

Rear Wiper Motor/Washer Hose Failure (No Rear Wipe or Washer Spray)

60K-170K

Rear Air Suspension (Auto-Leveling) Compressor Failure / Air Shock Leaks (Z55/Z95 equipped)

70K-160K

050K100K150K200K mi

Community Reported

420 owners

On the 2007-2014 GMC Yukon XL, the 2007-2014 Yukon XL shares the GMT900 platform with the Suburban, Silverado, and Sierra, and suffers the same steel brake line corrosion issue in salt-belt states. Factory lines corrode externally and can rupture without warning. NHTSA Recall 17V-449 covers limited VINs. Full-size long-wheelbase vehicles like the Yukon XL have more linear feet of brake line exposed to road salt than shorter vehicles, making inspection and replacement especially important.

This issue also affects: Cadillac Escalade, Chevrolet Express, Chevrolet Silverado 1500

Common Symptoms

Soft or spongy brake pedal
Brake fluid dropping with no visible wheel-end leak
Rust on brake lines under vehicle
Brake warning light
Pedal travels to floor during braking

How to Fix

Replace corroded lines with Dorman 919-149 stainless steel kit for long-wheelbase GMT900 (Suburban/Yukon XL). Annual brake line inspection in salt-belt states. Fluid flush every 3 years to prevent internal corrosion.

What Owners Are Using

Parts and tips from 420+ owners who fixed this issue

UpgradeDorman 919-149 stainless steel brake line kit for 2007-2014 Yukon XL long-wheelbase — pre-bent stainless lines sized for the Suburban/Yukon XL extended wheelbase. Permanent corrosion resistance vs factory steel. This is the same kit that fits the Chevrolet Suburban LWB and is widely recommended on YukonXLForum.com. (Dorman #919-149)
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NoteSAFETY CRITICAL: Check recall 17V-449 coverage at nhtsa.gov before any brake line work — if your Yukon XL VIN is covered, the repair is free. A rupturing brake line on a heavily-loaded Yukon XL (8-9 passengers) at highway speed is a life-threatening event. If you see any rust on the brake lines, schedule an inspection immediately and do not load the vehicle to capacity until lines are confirmed safe.
TipPerform a brake fluid test annually on 2007-2014 Yukon XL — a $10 test strip from any auto parts store measures copper content in the fluid (indicates corrosion from degraded fluid). Replace brake fluid every 3 years regardless of mileage. Fresh fluid prevents internal line corrosion from moisture absorption and also restores full brake pedal firmness that degraded fluid causes.

Typical repair cost:$600 - $2,000

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High Confidence420 reportsLast reported by owners Feb 2026Reviewed Feb 2026

On the 2000-2006 GMC Yukon XL, gMT800 SUVs commonly develop corrosion under the front wheel speed sensors or wear in the hub bearing assembly, which alters the low-speed wheel speed signal. The result is unexpected ABS activation at parking-lot speeds, longer stopping distances, and a pulsating brake pedal even on dry pavement. GM documented this condition in service bulletins, and owners frequently report replacing hub assemblies to cure it.

This issue also affects: Chrysler 300, Ford Transit Connect, GMC Sierra 1500

Common Symptoms

ABS activates at 3-10 mph on dry roads
brake pedal kicks back at low speed
longer stopping distance near a stop sign
ABS warning light
grinding or humming from front wheel bearing

How to Fix

Scan ABS wheel speed data during a low-speed stop and compare left and right front sensor readings. If one sensor drops out, inspect for rust buildup under the sensor or excessive hub play; cleaning the sensor mounting surface may help temporarily, but many vehicles need a complete front hub/bearing assembly with integrated sensor. Clear ABS codes and road-test after repair.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipIf the ABS chatters only right before a complete stop, inspect front wheel speed sensor data before replacing pads, rotors, or the ABS module.
TipAny hub with play or noise should be replaced, not just cleaned, because bearing wear can also distort the sensor signal.
UpgradeComplete hub assemblies with integrated sensors are the common long-term fix. (Timken Front Wheel Hub Bearing Assembly)
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UpgradeBudget-conscious owners also frequently use this aftermarket hub brand on GMT800 trucks. (Moog Front Hub Assembly with ABS Sensor)
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Typical repair cost:$180 - $900

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On the 2015-2020 GMC Yukon XL, yukon XL Denali and other trims equipped with Magnetic Ride Control can develop leaking dampers and internal failure, leading to degraded ride quality and suspension fault messages. Owner reports commonly describe bouncy/floaty ride, clunking over bumps, and repeated 'Service Suspension System' alerts as the shocks lose damping control. This is frequently documented in owner forums and NHTSA complaints for K2XX-era Yukon XL with MRC.

This issue also affects: Chevrolet Uplander, Chevrolet Silverado 1500

Common Symptoms

Service Suspension System message
Excessive bouncing/porpoising after bumps
Clunking over rough roads
Uneven tire wear from poor damping

How to Fix

Replace failed MRC shocks/struts (often in pairs on the same axle) and recalibrate/clear suspension codes. Use OEM MRC dampers (ACDelco/GM) matched to the vehicle’s RPO codes; inspect wiring/connectors at each damper for damage/corrosion.

Typical repair cost:$900 - $3,200

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160 owners

On the 2007-2020 GMC Yukon XL, yukon XL models equipped with rear auto-leveling air suspension can suffer compressor burnout or air shock/air line leaks, causing the rear to sag and triggering suspension warnings. Owners commonly report the compressor running frequently or continuously before failing, and the vehicle sitting low after parking. This is a recurring owner-reported problem on Yukon XL with factory rear air leveling.

This issue also affects: Chrysler New Yorker, Ford Expedition, GMC Yukon

Common Symptoms

Rear end sagging overnight
Compressor runs excessively or not at all
Service Suspension System message
Harsh ride from bottoming out

How to Fix

Diagnose for leaks (air shocks, lines, fittings) and replace the failed compressor/dryer assembly and/or leaking air shocks. After repair, clear suspension faults and confirm the system holds pressure and levels correctly.

Typical repair cost:$450 - $1,800

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On the 2000-2006 GMC Yukon XL, a very common GMT800 complaint is a clunk, knock, or slight bind felt through the steering wheel due to wear in the intermediate steering shaft. Owners often notice it at low speeds over small bumps, during parking maneuvers, or when transitioning on and off the brake. GM issued multiple service bulletins and revised shaft/lubrication procedures for this condition.

This issue also affects: Chevrolet Colorado, Chevrolet Malibu, Chevrolet Silverado 1500

Common Symptoms

clunk felt in steering wheel
knock over small bumps
binding or notchy steering at low speed
noise during parking lot turns
steering feels loose on center

How to Fix

Differentiate the noise from front suspension or steering gear play by checking the shaft for telescoping looseness and reproducing the clunk with the vehicle stationary. Depending on condition, the shaft can sometimes be lubricated per GM procedure, but replacement with the updated intermediate shaft is the more durable fix. After repair, verify steering wheel centering and absence of other front-end looseness.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipIf the shaft has already been lubricated once and the clunk returned, owners generally recommend replacing it with the updated part instead of repeating the lube procedure.
TipInspect tie rods, idler/pitman arms, and front shocks at the same time so a steering shaft noise is not confused with other front-end wear.

Typical repair cost:$150 - $450

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220 owners

On the 2007-2016 GMC Yukon XL, gMT900 and early K2XX Yukon XL models with 6L80/6L90 transmissions commonly develop leaks at the transmission cooler line crimps or quick-connect fittings. Owners report red fluid spots, low transmission fluid, and in severe cases slipping or overheating if fluid loss is significant. This issue is widely documented in owner reports and GM service bulletins addressing cooler line seepage/connection concerns on full-size trucks/SUVs using these transmissions.

This issue also affects: Audi A4 Avant, Audi A4, Audi A6

Common Symptoms

Red transmission fluid spots under front of vehicle
Burnt ATF smell after driving
Transmission slipping or delayed engagement
Transmission over-temp message (if severe)

How to Fix

Replace the leaking transmission cooler line(s) or fitting seals; many repairs involve replacing the entire line assembly rather than re-crimping. After repair, verify fluid level with the correct ATF (Dexron VI for 6L80/6L90) and check for overheating-related damage.

Typical repair cost:$250 - $900

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On the 2015-2024 GMC Yukon XL, the 8-speed (8L90) and 10-speed (10L80) automatic transmissions in the Yukon XL develop a torque converter clutch (TCC) shudder felt as a vibration or shake at light throttle between 25-50 mph. The shudder mimics driving over rumble strips. GM issued multiple TSBs (18-NA-355, 19-NA-193) and eventually reformulated the transmission fluid specification. The root cause is the TCC friction material interaction with the original Dexron HP fluid formulation.

This issue also affects: Audi A4 Avant, Audi A4, Audi A6

Common Symptoms

Vibration or shudder at 25-50 mph under light throttle
Feels like driving over rumble strips
Shudder disappears under heavy acceleration
Vibration most noticeable in overdrive gears
Intermittent — may come and go

How to Fix

First-line fix: complete transmission fluid flush and fill with GM-approved Mobil 1 Synthetic LV ATF HP (Blue Label) — NOT the original red-label Dexron HP. This updated fluid resolves the shudder in approximately 80% of cases. If shudder returns within 30,000 miles of the fluid change, the torque converter requires replacement. Do NOT use aftermarket friction modifiers or additives — they void the GM powertrain warranty and can damage the transmission.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipDemand the dealer use Mobil 1 Synthetic LV ATF HP (blue label) per the updated TSB. Many dealers still stock the old red-label Dexron HP that caused the shudder in the first place. If they flush with the wrong fluid, the shudder will return within 5,000 miles.
UpgradeTransmission flush kit for complete fluid exchange to address shudder (Liqui Moly Transmission Flush Kit)
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UpgradeFull synthetic ATF designed to reduce shudder in automatic transmissions (Valvoline MaxLife ATF Full Synthetic)
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Typical repair cost:$150 - $3,000

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On the 2007-2019 GMC Yukon XL, the Yukon XL with the 5.3L or 6.2L V8 and Active Fuel Management (AFM/DOD) system develops hydraulic valve lifter failures. The AFM lifters, which collapse to deactivate cylinders for fuel economy, fail and cause persistent ticking noise, misfires, and potential camshaft damage. The problem is most common on 2007-2019 models. GM service bulletin recommends replacing all 8 AFM lifters if ticking persists after oil change.

This issue also affects: Buick LeSabre, Buick Park Avenue, Buick Encore

Common Symptoms

Ticking noise on cold start lasting 2 seconds to 10 minutes
Persistent engine tick at idle
Misfires on AFM-deactivated cylinders
Rough idle when AFM engages
Check engine light with misfire codes
Reduced fuel economy

How to Fix

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

UpgradeBluetooth OBD-II scanner for reading engine codes and monitoring live data (BlueDriver Bluetooth OBD2 Diagnostic Scan Tool)
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UpgradeQuality synthetic oil and filter combo for engine maintenance (Mobil 1 Full Synthetic Oil and Filter Bundle)
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Typical repair cost:$1,500 - $4,500

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On the 2000-2006 GMC Yukon XL, the 4.8L, 5.3L, and 6.0L Vortec engines used in this generation commonly develop knock sensor faults because moisture collects in the valley beneath the intake manifold. Corrosion at the sensors or harness causes persistent P0327/P0332 codes, reduced spark advance, and occasional drivability complaints. This is a well-known GMT800 issue documented in GM service bulletins and owner forums.

This issue also affects: Cadillac Escalade, Chevrolet Express, Chevrolet Silverado 1500

Common Symptoms

check engine light
reduced power or sluggish acceleration
poor fuel economy
intermittent spark knock code
recurring P0327 or P0332 after rain or washing

How to Fix

Scan for knock sensor codes, remove the intake manifold, and inspect both sensors, the sub-harness, and the rubber grommet seals. Replace both knock sensors and the harness together, clean the valley thoroughly, and reseal the sensor wells/grommets to prevent future water intrusion. Many technicians also verify no coolant leaks or cowl water leaks are contributing.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipReplace both sensors and the harness at the same time while the intake is off; doing only one sensor often leads to repeat labor.
TipUse new intake gaskets and apply a small amount of RTV around the sensor grommets as commonly recommended by GMT800 owners.

Typical repair cost:$450 - $1,100

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On the 2015-2020 GMC Yukon XL, the electronic steering column lock (ESCL) actuator in 2015-2020 Yukon XL models develops a clicking, popping, or grinding noise when turning the steering wheel, particularly at startup. In some cases, the ESCL prevents the vehicle from starting entirely, displaying a "Steering Column Lock" message. GM issued TSB 16-NA-012 acknowledging the issue. The ESCL motor gear teeth strip or the position sensor misreads, causing the lock to partially engage or fail to release.

This issue also affects: Dodge Magnum, Ford Mustang Mach-E, Ford Transit

Common Symptoms

Clicking or popping noise from steering column on startup
Vehicle will not start — Steering Column Lock message
Grinding noise when turning the key or pressing start
Intermittent no-crank condition
Steering wheel feels temporarily locked after parking

How to Fix

Replace the electronic steering column lock actuator assembly (GM part 13501988). The replacement procedure requires disconnecting the battery, removing the lower steering column cover, and swapping the ESCL module. A Tech 2 or MDI scan tool relearn procedure must be performed after installation to program the new module to the BCM. Some owners have the ESCL permanently disabled via BCM programming at the dealer, though this may affect theft deterrent system operation.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

NoteIf your Yukon XL displays the Steering Column Lock message and will not start, try this: turn the key to ON (do not crank), wait 10 minutes for the security system to reset, then turn off and try starting again. This works as a temporary fix in about 60% of cases, but the ESCL still needs to be replaced.
UpgradeDorman steering shaft — fixes clunking and binding (Dorman Steering Shaft)
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UpgradeDorman intermediate steering shaft — solves steering play (Dorman Intermediate Steering Shaft)
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Typical repair cost:$300 - $800

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On the 2000-2006 GMC Yukon XL, owners frequently report clicking behind the dash, air stuck on defrost or floor, or one side blowing the wrong temperature due to failed HVAC actuators. On Yukon XL models with front and rear climate systems, the mode and blend door actuators can strip gears or lose calibration over time. This is distinct from compressor failure and is a common repair on aging GMT800 SUVs.

This issue also affects: Chevrolet Equinox, GMC Sierra 1500, Chevrolet Silverado 1500

Common Symptoms

clicking noise behind dash
air only blows from defrost vents
driver and passenger temperatures do not match
stuck on hot or cold air
rear HVAC airflow mode incorrect

How to Fix

Use the HVAC self-diagnostic procedure or a scan tool where available, then identify whether the failed unit is the mode, temperature, or recirculation actuator. Replace the faulty actuator, inspect the door for binding, and perform actuator recalibration by pulling HVAC fuses or using the proper relearn procedure. Access can range from easy under-dash work to more involved dash disassembly depending on actuator location.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipRun the actuator recalibration procedure after replacement; a new actuator can still behave incorrectly if the HVAC module is not relearned.
TipIf the new actuator fails quickly, check for a binding HVAC door before replacing another motor.
UpgradeOEM-style actuators generally fit and calibrate better than the cheapest no-name replacements. (ACDelco HVAC Air Door Actuator)
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UpgradeAftermarket replacement actuators are also commonly used for mode and temperature door repairs. (Dorman HVAC Door Actuator)
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Typical repair cost:$150 - $900

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On the 2015-2020 GMC Yukon XL, the K2UC (2015-2020) generation Yukon XL dashboards develop cracks, warping, and delamination from UV exposure and heat cycling, particularly in southern states. Cracks typically originate near the defroster vents and passenger airbag seam and spread across the dash surface. The issue is covered under GM special coverage adjustment 14311 for some VINs, extending the warranty to 10 years. Beyond cosmetic concerns, severe cracking near the passenger airbag seam can affect proper airbag deployment.

This issue also affects: Chevrolet Suburban, Dodge Ram 1500

Common Symptoms

Visible cracks spreading from defroster vent area
Dashboard surface warping or bubbling
Shiny or sticky texture on dashboard
Cracks near passenger airbag deployment seam
Rattling from loose dashboard pieces

How to Fix

Check VIN eligibility for GM special coverage 14311 (free dashboard replacement at dealer, 10-year coverage). If not covered, dashboard replacement costs $800-2,000+ at a dealer. Aftermarket dashboard covers from DashMat or Coverlay are $150-300 alternatives that cover existing cracks. For a proper repair, the entire instrument panel must be removed (6-8 hours labor). Prevention: use a windshield sunshade and apply 303 Aerospace Protectant to the dash surface quarterly.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipBefore paying out of pocket, call GM customer care at 1-800-462-8782 and ask about Special Coverage Adjustment 14311 for dashboard cracking. Even if your VIN is not in the original coverage list, GM has been known to approve goodwill repairs on a case-by-case basis, especially if you have service records showing you maintained the vehicle at a GM dealer.
UpgradeDashMat dash cover — protects and covers cracked dashboards (DashMat Dashboard Cover)
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UpgradeCoverlay dash cover — custom-molded replacement overlay (Coverlay Dashboard Cover)
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Typical repair cost:$150 - $2,000

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On the 2003-2006 GMC Yukon XL, 2003-2006 GMT800 full-size GM SUVs commonly suffer instrument cluster failures caused by defective stepper motors and related solder/joint issues inside the cluster. Owners report speedometers reading far too high or low, fuel gauges stuck on empty or full, and intermittent tachometer/oil pressure/voltmeter operation. GM issued a special coverage adjustment for many vehicles in this family because the problem was so widespread.

This issue also affects: Chevrolet Silverado 1500, Ford Ranger, GMC Sierra 1500

Common Symptoms

speedometer reads incorrectly
fuel gauge stuck on empty or full
tachometer inoperative or erratic
oil pressure gauge pegged high or low
intermittent backlighting or dead cluster

How to Fix

Confirm the fault by comparing scan-tool data to gauge readings and checking for cluster self-test anomalies. The usual repair is instrument cluster rebuild or replacement with updated stepper motors; many owners use mail-in rebuild services. If mileage programming is required, use a qualified rebuilder or dealer-capable programming service.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipUse a reputable cluster rebuilder that replaces all stepper motors, not just the failed gauge, to avoid repeat failures.
TipBefore replacing the cluster, compare live PCM speed and fuel level data with gauge readings to rule out sender or network issues.

Typical repair cost:$250 - $650

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On the 2007-2020 GMC Yukon XL, yukon XL vehicles commonly experience rear wiper motor failure or washer hose disconnection/leaks in the liftgate area, resulting in loss of rear wiping or washer function. Owners report the rear wiper stopping intermittently, moving slowly, or not operating at all, and washer fluid leaking into the liftgate/headliner area. This pattern appears repeatedly in owner reports for Yukon XL and related GM SUVs.

Common Symptoms

Rear wiper inoperative or intermittent
Rear wiper moves slowly or stalls
No rear washer spray
Washer fluid leak in liftgate/headliner area

How to Fix

Diagnose power/ground at the rear wiper motor and replace the motor if failed; inspect the liftgate harness and washer hose routing for breaks/disconnections and repair/replace as needed. Confirm the rear washer nozzle is not clogged and that the hose is properly secured through the liftgate grommets.

Typical repair cost:$90 - $450

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140 owners

On the 2007-2020 GMC Yukon XL, yukon XL owner reports frequently cite exterior door handles or internal linkage rods/clips failing, causing the handle to move without unlatching the door. This can occur on front or rear doors and may worsen in cold weather or after repeated use as plastic clips fatigue. The issue is widely documented in owner forums and NHTSA complaints for full-size GM SUVs/trucks of these generations.

This issue also affects: GMC Sonoma

Common Symptoms

Exterior handle pulls with no door release
Door only opens from inside (or not at all)
Intermittent sticking latch
Handle feels loose or has abnormal travel

How to Fix

Remove the door panel and replace the failed handle assembly and/or linkage clips/rods; inspect latch operation and lubricate the latch mechanism. Use OEM replacement handle/linkage components matched to the door and model year.

Typical repair cost:$120 - $550

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On the 2015-2024 GMC Yukon XL, the Yukon XL rear liftgate gas struts lose their charge and fail to hold the heavy liftgate open, typically between 3-5 years regardless of mileage. The oversized liftgate of the XL model is significantly heavier than the standard Yukon, putting more stress on the struts. A failing strut allows the liftgate to slowly drop or slam closed, posing a head injury risk. In cold weather, weak struts fail more noticeably due to gas contraction.

This issue also affects: Chevrolet Traverse

Common Symptoms

Liftgate does not stay open fully
Liftgate slowly drops after opening
Liftgate slams closed unexpectedly
More noticeable in cold weather
Hissing sound from strut (gas leak)

How to Fix

Replace both liftgate support struts as a pair (never replace just one). Strongarm 6262 or Sachs SG330090 are popular OE-equivalent replacements. The replacement takes about 15 minutes with a trim removal tool to pop the ball socket clips. Ensure the new struts are rated for the correct force (the XL requires higher-force struts than the standard Yukon). Power liftgate models should have the motor assembly inspected simultaneously.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipDo NOT buy cheap universal struts for the Yukon XL — they do not have enough force to hold the heavy XL liftgate. You need struts rated for 80+ lbs force. Strongarm 6262 is the most popular choice and runs about $25 per pair on Amazon.
UpgradeStrongArm liftgate struts — easy bolt-on replacement (StrongArm Liftgate Support Struts)
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UpgradeSachs OE-quality liftgate gas struts (Sachs Liftgate Gas Struts)
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Typical repair cost:$50 - $200

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On the 2007-2020 GMC Yukon XL, yukon XL V8 engines (notably 5.3L and 6.2L) can develop broken exhaust manifold bolts and/or warped manifolds, leading to an exhaust leak that is loudest on cold start. Owners describe a ticking sound that diminishes as the engine warms and the manifold expands. This is a well-documented GM truck/SUV issue in owner reports and service discussions for these engines.

This issue also affects: Buick LeSabre, Buick Park Avenue, Audi Q7

Common Symptoms

Ticking noise on cold start
Exhaust smell in engine bay
Soot marks near manifold flange
Noise decreases as engine warms

How to Fix

Replace broken manifold bolts/studs and install updated hardware; resurface or replace the exhaust manifold if warped. Inspect for missing bolt heads and use proper extraction methods; replace manifold gaskets if applicable for the engine/year.

Typical repair cost:$300 - $1,800

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On the 2015-2024 GMC Yukon XL, four-wheel-drive Yukon XL models with the NP263 (NQH) and NP246 transfer cases develop fluid leaks from the front and rear output shaft seals. The leak typically starts as a slow weep and progresses to a steady drip, leaving ATF spots on the driveway. If left unaddressed, the transfer case runs low on fluid, causing internal damage to the chain, sprockets, and bearings. The rear output seal is the most common failure point.

This issue also affects: Alfa Romeo Stelvio, Cadillac Escalade, Chevrolet Express

Common Symptoms

ATF dripping from transfer case area
Transfer case fluid low at service intervals
Grinding or whining noise from transfer case
Difficulty engaging 4WD
Service 4WD message on dashboard

How to Fix

Replace the leaking output shaft seal(s). The rear seal can be replaced with the transfer case in the vehicle by removing the rear driveshaft and prying out the old seal. The front seal requires more disassembly. Use only genuine ACDelco seals (ACDelco 24232325) as aftermarket seals have a higher failure rate on this application. Refill with Dexron VI ATF to the proper level. Inspect the output shaft for scoring — a scored shaft will destroy the new seal quickly.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipBefore replacing the transfer case seal, check the output shaft for grooves or scoring by running your fingernail across it. If you can feel a groove, the new seal will leak within weeks. A Speedi-Sleeve repair sleeve ($20) pressed over the scored area gives the new seal a fresh surface to ride on.
UpgradeMobil 1 75W-90 synthetic gear oil for differential and transfer case (Mobil 1 Synthetic Gear Oil 75W-90)
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UpgradeFel-Pro gasket kit for drivetrain service (Fel-Pro Gasket Kit)
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Typical repair cost:$200 - $600

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On the 2007-2019 GMC Yukon XL, the Yukon XL (like all GMT900 full-size GM SUVs) has a high rate of AC compressor failure, often before 80,000 miles. When the compressor seizes, metal debris contaminates the entire system. The dual-zone system with separate rear AC is complex and expensive to repair. Rear AC lines and evaporator are prone to the same corrosion issues as the Suburban.

Common Symptoms

Front or rear AC blows warm air
Grinding or squealing from compressor
AC cycles on and off rapidly
Refrigerant loss requiring frequent recharges
Compressor clutch not engaging

How to Fix

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

UpgradeBlueDriver Bluetooth OBD-II scanner — professional diagnostics from your phone (BlueDriver Bluetooth OBD-II Scanner)
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UpgradeHaynes repair manual — step-by-step procedures for your vehicle (Haynes Repair Manual)
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Typical repair cost:$800 - $2,500

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On the 2000-2006 GMC Yukon XL, in-tank fuel pump module failure is a common GMT800 problem, especially as mileage climbs or when vehicles are frequently run near empty. Owners report extended cranking, hard starts after sitting, sudden stalling, loss of power under load, or complete no-start conditions. The issue is well represented in owner reports and repair histories across 5.3L, 6.0L, and 8.1L applications.

This issue also affects: Alfa Romeo Giulia, Alfa Romeo Stelvio, Buick LeSabre

Common Symptoms

long crank before starting
engine cranks but will not start
stalling while driving
loss of power on acceleration
fuel pump whining from tank
low fuel pressure

How to Fix

Verify fuel pressure at the rail and monitor pressure drop during key-on and cranking. If pressure is low or intermittent, replace the fuel pump module and inspect the electrical connector for heat damage; replacing the fuel filter at the same time is standard practice. On rusty vehicles, many owners choose to cut an access panel under the rear cargo area, though tank removal remains the factory method.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

TipUse a Delphi or AC Delco pump module; many owners report short life from bargain aftermarket pumps.
TipReplace the pump harness pigtail if the connector shows melting or discoloration, and avoid routinely driving below 1/4 tank.

Typical repair cost:$500 - $1,200

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Frequently Asked Questions

What are the most common GMC Yukon XL problems?

According to Au7o's analysis of 1,670+ owner reports, the 2000-2024 GMC Yukon XL has 22 documented issues. The most frequently reported are: Brake Line Corrosion and Failure (GMT900 Platform), 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss), Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings. Of these, 6 are rated critical and should be addressed promptly.

Is the GMC Yukon XL reliable?

The 2000-2024 GMC Yukon XL has 22 known issues documented across 1,670+ owner reports. 6 issues are rated critical: Brake Line Corrosion and Failure (GMT900 Platform) and 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss) and Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings and Active Fuel Management (AFM) Lifter Failure and Tick and Steering Column Lock Actuator Click and Binding and Front Hub Bearing and ABS Wheel Speed Sensor Corrosion Causing Unwanted ABS Activation. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common GMC Yukon XL problems?

Repair costs for known GMC Yukon XL issues range from $50 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Brake Line Corrosion and Failure (GMT900 Platform), typically costs $600-$2,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What year GMC Yukon XL is the most reliable?

Reliability varies across model years of the GMC Yukon XL. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2000-2024 GMC Yukon XL with 22 documented issues documented across 1,670+ owner reports.

All 22 Known Issues

When Issues Typically Appear

2007-2014 GMC Yukon XL: Brake Line Corrosion and Failure (GMT900 Platform)#

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How to Fix

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2000-2006 GMC Yukon XL: Front Hub Bearing and ABS Wheel Speed Sensor Corrosion Causing Unwanted ABS Activation#

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2015-2020 GMC Yukon XL: Magnetic Ride Control (MRC) Shock/Strut Fluid Leak and 'Service Suspension System' Warnings#

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2007-2020 GMC Yukon XL: Rear Air Suspension (Auto-Leveling) Compressor Failure / Air Shock Leaks (Z55/Z95 equipped)#

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2000-2006 GMC Yukon XL: Intermediate Steering Shaft Clunk and Binding Over Bumps or During Turns#

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2007-2016 GMC Yukon XL: 6L80/6L90 Transmission Cooler Line Leak at Crimp/Fitting (Fluid Loss)#

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2015-2024 GMC Yukon XL: Transmission Torque Converter Shudder (8L90/10L80)#

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2007-2019 GMC Yukon XL: Active Fuel Management (AFM) Lifter Failure and Tick#

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2000-2006 GMC Yukon XL: Knock Sensor Water Intrusion Under Intake Causing Check Engine Light#

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2015-2020 GMC Yukon XL: Steering Column Lock Actuator Click and Binding#

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2000-2006 GMC Yukon XL: Blend Door / HVAC Mode Actuator Failure Causing Incorrect Airflow or Temperature Control#

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2015-2020 GMC Yukon XL: Dashboard Cracking and Warping from UV/Heat Exposure#

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2003-2006 GMC Yukon XL: Instrument Cluster Stepper Motor Failure Causing Inaccurate Gauges#

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2007-2020 GMC Yukon XL: Rear Wiper Motor/Washer Hose Failure (No Rear Wipe or Washer Spray)#

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2007-2020 GMC Yukon XL: Door Handle/Linkage Failure (Exterior Handle Pulls but Door Won’t Open)#

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2015-2024 GMC Yukon XL: Rear Liftgate Support Strut Failure#

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2007-2020 GMC Yukon XL: Cracked Exhaust Manifold Bolts / Manifold Leak (5.3L/6.2L V8) Causing Cold-Start Tick#

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How to Fix