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Cadillac · Known Issues

2021 Cadillac XT5 Problems: 7 Known Issues

2021 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Cadillac XT5 has 7 documented known issues, with 2 rated critical. The most serious are Recall 21V422: Improperly Seated Fuel Supply Line Can Separate and Leak Gasoline ($0-$0 repair) and 3.6L V6 Timing Chain Issues (XT5 V6 models) ($2,500-$4,500 repair). Across all issues with published estimates, repair costs range from $200 to $4,500. DIY maintenance guides at au7o.io.

In This Article

  • XT5 Fuel System1
  • XT5 Engine1
  • XT5 Transmission2
  • XT5 Safety/Recalls1
  • XT5 Brakes1
  • XT5 Body/Panels1
  • Recalls10
  • FAQ
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In This Article

  • Fuel System1
  • Engine1
  • Transmission2
  • Safety/Recalls1
  • Brakes1
  • Body/Panels1
  • Recalls10
  • FAQ

All 7 Known Issues

Filter:
ALL YEARS202520242023202220212020201920182017

On the 2021 Cadillac XT5, gM recalled 2021 Cadillac XT5 and XT6 and GMC Acadia vehicles on which the fuel supply line may not have been fully seated and locked at the quick-connect fitting during assembly. An unseated line can loosen or separate under fuel system pressure and vibration, spraying gasoline in the engine bay or under the vehicle, creating a fire hazard and a potential stall from loss of fuel pressure.

This issue also affects: Cadillac XT4, Cadillac XT6, Cadillac XTS

Common Symptoms

  • Strong raw gasoline smell around the vehicle
  • Visible fuel wetness or drips near the fuel line routing
  • Hard starting or stalling from low fuel pressure
  • Fuel odor entering the cabin

How to Fix

Verify the VIN against NHTSA campaign 21V422000; dealers inspect and replace the fuel supply lines at no charge. Owner notification letters went out July 1, 2021. If you smell raw fuel, do not drive the vehicle - have it inspected, because an unseated quick-connect can go from a seep to a full separation without warning.

Typical repair cost:$0 - $0

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2017-2025 Cadillac XT5, the XT5 V6 models use the GM 3.6L V6 (LGX) which has improved timing chains over earlier versions but is not immune to timing chain stretch at higher mileage. The LGX is better than the earlier LFX but still uses three timing chains with plastic guides. Issues typically appear later (100,000-150,000 miles) compared to earlier 3.6L variants. The 2020+ XT5 2.0T models use a different engine (LSY) and are not affected by this issue.

This issue also affects: Buick Cascada, Buick Enclave, Buick Encore

Common Symptoms

  • Check engine light with timing correlation codes
  • Rattling on cold start
  • Rough idle or misfires at high mileage
  • Reduced engine power warning

How to Fix

Same timing chain replacement as SRX/CTS 3.6L. Cloyes 9-0753S kit, replace water pump simultaneously. The LGX timing chain typically lasts longer than the LFX, so preventive replacement at 100,000+ miles is recommended rather than the 80,000-mile interval for earlier engines.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Timing chain kit (complete) — GM 3.6L LGX
    OEM12713649Cross-refACDelco (GM OE) 12713649, Cloyes 9-0753S — DOES NOT FIT, see note$280–$360

    This is the correct complete timing chain kit for the XT5's 3.6L V6 (LGX), sold as ACDelco/GM OE kit 12713649 and cataloged for 2017-2025 Cadillac XT5 3.6L. IMPORTANT CORRECTION TO THE DOCUMENTED FIX: Cloyes 9-0753S is NOT an XT5 part.

  • Water pump (with gasket) — 3.6L V6
    OEM12707180Cross-refACDelco GM OE 12707180, supersedes GM 12672035, ACDelco Professional 252-1038$110–$140

    Replace with the timing chains — the water pump is behind/at the timing cover on the LGX, so doing it at the same time saves the whole teardown later. 12707180 is the current GM part and supersedes 12672035.

Typical repair cost:$2,500 - $4,500

Research This Issue

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Community Reported
Medium ConfidenceLast reported by owners Feb 2026Reviewed Feb 2026

On the 2017-2025 Cadillac XT5, the Cadillac XT5 uses an 8-speed (2017-2019) or 9-speed (2020+) automatic transmission. The 8-speed shares the torque converter shudder issue with other GM 8-speed vehicles. The 9-speed (GM 9T50/9T65) can have harsh shifts, delayed engagement, and shift hunting. Both transmissions have been subject to multiple software calibration updates from GM. The 9-speed is particularly sensitive to fluid condition and requires proper Dexron HP fluid.

This issue also affects: Buick Encore GX, Buick Regal, Cadillac DeVille

Common Symptoms

  • Shudder at light throttle between 25-50 mph (8-speed)
  • Harsh or clunky 1-2 shift
  • Delayed engagement from Park to Drive
  • Transmission hunting between gears on hills (9-speed)
  • Hesitation on acceleration from stop

How to Fix

First step is a TCM software update at the dealer - multiple calibrations have been released. For 8-speed shudder, a fluid exchange with Mobil 1 LV ATF HP may resolve it. The 9-speed typically responds well to software updates. Persistent issues may require torque converter replacement (8-speed) or valve body replacement (9-speed).

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • AW-1 Automatic Transmission Fluid (8-speed models, 1 qt)
    OEM19256039Cross-refACDelco 10-4062 (same fluid, retail number), GM 19256040 (Canada), Idemitsu Type AW-1 / TLS-LV ATF$11–$22

    For 2017-2019 XT5, which uses the Aisin AWF8F45 (AF50-8) 8-speed transaxle - NOT the GM 8L45 named in the issue write-up (8L45 is a rear-drive unit and does not fit the transverse XT5). Correction that matters for buyers: Mobil 1 LV ATF …

    Summit Racing

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$200 - $3,500

Research This Issue

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Community Reported
Medium ConfidenceLast reported by owners Feb 2026Reviewed Feb 2026

On the 2020-2021 Cadillac XT5, gM PIP5608F covers 2020-2021 XT5 vehicles with 9-speed transmissions RPO M3G or M3W when torque-converter clutch shudder occurs on re-apply after a shift at 40 mph or below. GM identifies possible excessive assembly lubricant in the fluid and requires confirmation with TCC slip data or the scan-tool command test.

Common Symptoms

  • Low-speed shudder on TCC re-apply after a shift
  • Concern occurs at 40 mph or below
  • Concern changes when TCC is commanded on

How to Fix

Have a qualified transmission technician verify RPO M3G or M3W and confirm the event is TCC shudder using slip-speed data or the commanded-on test. If the bulletin criteria are met, follow the GM DEXRON VI drain-and-fill procedure and drive at least 200 miles before judging the repair. Do not use a universal additive or flush kit. The exact ShowMeTheParts lookup returned no transmission-fluid candidate.

Research This Issue

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NHTSA Verified
High ConfidenceVerifiedReviewed Jul 2026

On the 2020-2021 Cadillac XT5, on 2020-2021 XT5, XT6 and GMC Acadia models optioned with Surround Vision, the coaxial cable connector feeding the rear camera may be improperly crimped. The connection degrades and the rearview image goes black, freezes, or fails to appear when reverse is selected. Separately, non-recall XT5 owners across 2020-2023 report the backup camera taking 15-20 seconds to switch out of night mode and grid lines being nearly invisible in bright sun - a display-calibration complaint distinct from the crimp defect.

Common Symptoms

  • Black screen when reverse is selected
  • Rearview image freezes or flickers
  • Camera takes 15-20 seconds to brighten after dark-to-light transition
  • Faint or invisible guideline overlay
  • Surround Vision top-down view missing panels

How to Fix

Check the VIN against NHTSA campaign 22V709000 (GM recall) and have the dealer replace the coaxial cable at no charge. For non-recall cars with a slow or dim image, update the infotainment and video processing module software, clean the camera lens and its washer nozzle, and verify the connector at the liftgate harness pass-through, which flexes every time the power liftgate cycles.

Typical repair cost:$0 - $0

Research This Issue

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 2017-2025 Cadillac XT5, the front brake rotors warp prematurely, causing steering wheel vibration and brake pedal pulsation during moderate to hard braking. The issue is attributed to the heavy vehicle weight combined with rotors that are borderline in thickness for the application. Aggressive braking or mountain driving accelerates warping.

Common Symptoms

  • Steering wheel vibration when braking
  • Brake pedal pulsation
  • Vibration worse at highway speed braking
  • Uneven pad wear

How to Fix

Replace the front brake rotors with quality aftermarket rotors that meet or exceed OEM thickness. Bed in the new rotors and pads properly with a series of moderate stops. Avoid hard braking followed by holding the brake (which creates hot spots). Upgrading to slotted rotors can help manage heat better.

Typical repair cost:$200 - $500

Research This Issue

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Community Reported
Medium Confidence

On the 2017-2025 Cadillac XT5, the power liftgate struts lose their charge and fail to hold the liftgate open, causing it to slowly close or fall. The motorized struts can also operate erratically, stopping mid-travel or failing to open fully. In cold weather, the struts may not have enough force to lift the gate at all.

Common Symptoms

  • Liftgate will not stay open
  • Liftgate closes slowly on its own
  • Liftgate stops mid-travel
  • Liftgate will not open in cold weather
  • Warning beep during liftgate operation

How to Fix

Replace both power liftgate struts as a pair. Use OEM struts for proper fit with the power liftgate system. After replacement, the liftgate height setting may need to be reprogrammed. If the liftgate motor is also weak, it should be replaced at the same time. Lubricating the hinge points helps reduce strain on the struts.

Typical repair cost:$200 - $500

Research This Issue

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Community Reported
Medium Confidence
NHTSA Recalls10 recalls

EQUIPMENT:OTHER:LABELS

General Motors, LLC (GM) is recalling certain 2023 Cadillac XT5, XT6, and GMC Acadia vehicles. The certification label located on the driver's side B-pillar contains tire size information that may be illegible. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 110, "Tire Selection and Rims."

Campaign #22V70800022/09/2022

POWER TRAIN:DRIVELINE:DRIVESHAFT

General Motors, LLC (GM) is recalling certain 2023 Cadillac XT5 and GMC Acadia vehicles. The right-front half-shaft assemblies may be improperly connected to the transmission, causing them to separate.

Campaign #23V04300002/02/2023

POWER TRAIN:AUTOMATIC TRANSMISSION

General Motors, LLC (GM) is recalling certain 2023 Cadillac XT6, GMC Acadia, Chevrolet Blazer, Traverse, and 2022-2023 Cadillac XT5 vehicles. The transmission may have been built with an incorrect sun gear, which can result in the driver-side half-shaft disengaging from the transmission.

Campaign #23V172000
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Other Cadillac Models

Cadillac XTS30Cadillac CT524Cadillac Escalade20Cadillac Lyriq19Cadillac XT617Cadillac CT617

Frequently Asked Questions

What are the most common Cadillac XT5 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Cadillac XT5 has 7 documented issues. The most frequently reported are: Recall 21V422: Improperly Seated Fuel Supply Line Can Separate and Leak Gasoline, 3.6L V6 Timing Chain Issues (XT5 V6 models), 8-Speed / 9-Speed Transmission Shudder and Harsh Shifting. Of these, 2 are rated critical and should be addressed promptly.

Is the Cadillac XT5 reliable?

The 2021 Cadillac XT5 has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Recall 21V422: Improperly Seated Fuel Supply Line Can Separate and Leak Gasoline and 3.6L V6 Timing Chain Issues (XT5 V6 models). 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 Cadillac XT5 problems?

Repair costs for known Cadillac XT5 issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Recall 21V422: Improperly Seated Fuel Supply Line Can Separate and Leak Gasoline, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2021 Cadillac XT5 Recall 21V422: Improperly Seated Fuel Supply Line Can Separate and Leak Gasoline?

GM recalled 2021 Cadillac XT5 and XT6 and GMC Acadia vehicles on which the fuel supply line may not have been fully seated and locked at the quick-connect fitting during assembly. An unseated line can loosen or separate under fuel system pressure and vibration, spraying gasoline… Repairs typically run $0-$0. Severity: high.

What is the 2017-2025 Cadillac XT5 3.6L V6 Timing Chain Issues (XT5 V6 models)?

The XT5 V6 models use the GM 3.6L V6 (LGX) which has improved timing chains over earlier versions but is not immune to timing chain stretch at higher mileage. The LGX is better than the earlier LFX but still uses three timing chains with plastic guides. Issues typically appear la… Repairs typically run $2,500-$4,500. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

16/03/2023

ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

General Motors, LLC (GM) is recalling certain 2023-2025 Cadillac XT5 and 2024-2025 Cadillac XT6 vehicles. The instrument panel may not illuminate when the hazard warning lights, high beams, or turn signals are activated. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 101, "Controls and Displays" and 108, "Lamps, Reflective Devices, and Assoc. Equipment."

Campaign #24V45900020/06/2024

SUSPENSION:REAR

General Motors, LLC (GM) is recalling certain 2022 Cadillac XT5, XT6, and GMC Acadia vehicles. The left-rear suspension toe link may have been tightened improperly, which could result in a loose or separated toe link.

Campaign #22V42700016/06/2022

+ 5 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 2017-2025 Cadillac XT5 8-Speed / 9-Speed Transmission Shudder and Harsh Shifting?

The Cadillac XT5 uses an 8-speed (2017-2019) or 9-speed (2020+) automatic transmission. The 8-speed shares the torque converter shudder issue with other GM 8-speed vehicles. The 9-speed (GM 9T50/9T65) can have harsh shifts, delayed engagement, and shift hunting. Both transmission… Repairs typically run $200-$3,500. Severity: medium.

What is the 2020-2021 Cadillac XT5 Recall 22V709: Improperly Crimped Surround Vision Coaxial Cable Kills the Rearview Camera Image?

On 2020-2021 XT5, XT6 and GMC Acadia models optioned with Surround Vision, the coaxial cable connector feeding the rear camera may be improperly crimped. The connection degrades and the rearview image goes black, freezes, or fails to appear when reverse is selected. Separately, n… Repairs typically run $0-$0. Severity: medium.

What is the 2020-2021 Cadillac XT5 Low-Speed TCC Shudder Must Be Confirmed Before a Fluid Drain and Fill?

GM PIP5608F covers 2020-2021 XT5 vehicles with 9-speed transmissions RPO M3G or M3W when torque-converter clutch shudder occurs on re-apply after a shift at 40 mph or below. GM identifies possible excessive assembly lubricant in the fluid and requires confirmation with TCC slip d… Severity: medium.

What is the 2017-2025 Cadillac XT5 Front Brake Rotor Warping and Pedal Pulsation?

The front brake rotors warp prematurely, causing steering wheel vibration and brake pedal pulsation during moderate to hard braking. The issue is attributed to the heavy vehicle weight combined with rotors that are borderline in thickness for the application. Aggressive braking o… Repairs typically run $200-$500. Severity: low.

What is the 2017-2025 Cadillac XT5 Power Liftgate Strut Failure and Erratic Operation?

The power liftgate struts lose their charge and fail to hold the liftgate open, causing it to slowly close or fall. The motorized struts can also operate erratically, stopping mid-travel or failing to open fully. In cold weather, the struts may not have enough force to lift the g… Repairs typically run $200-$500. Severity: low.