Chevrolet · Known Issues
2018 Chevrolet Silverado 1500 Problems & Issues
2018 model year · 8,464+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2018 model year · 8,464+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 8,464+ owner reports, the 2018 Chevrolet Silverado 1500 has 25 documented known issues, with 7 rated critical. The most serious are Active Fuel Management Lifter Failure ($2,000-$4,500 repair), 5.3L V8 (AFM/DFM) collapsed/failed lifter causing ticking and cylinder misfire ($2,500-$7,000 repair), P0700 — Transmission Control System Malfunction from Failed 6L80 TEHCM (or 4L60E Shift Solenoid) ($300-$1,600 repair), Trailer Brakes Disabled by Incompatible Dexter Electric-Over-Hydraulic Actuator ($90-$400 repair), 5.3L L83 Stretched Timing Chain / Cam Phaser Wear Setting Crank-Cam Correlation Codes ($1,200-$2,500 repair), Brake vacuum pump degradation reducing power brake assist (NHTSA recall 19V645) ($0-$400 repair) and 8-speed (8L90/8L45) torque converter clutch shudder and harsh shifting ($300-$3,500 repair). The most commonly reported issue is 8/10-Speed Transmission Shudder with 3,200 owner reports. Across all issues with published estimates, repair costs range from $15 to $7,000. DIY maintenance guides at au7o.io.
TRAILER HITCHES
OEM Systems, LLC (OEM) is recalling certain 2024 Chevrolet Silverado vehicles. The rear bumper mounting bracket may not be sufficient for towing, which can allow the towed trailer to detach from the vehicle.
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
SEAT BELTS
General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat frame in the front-row center seating position.
SEAT BELTS
General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
General Motors, LLC is recalling certain 2020 Chevrolet Silverado 2500, 3500, GMC Sierra 2500, 3500, and 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles that may have been repaired incorrectly under recall 24V797. The transmission control valve may fail and cause the rear wheels to lock up.
+ 15 more recalls. Check all on NHTSA.gov
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According to Au7o's analysis of 8,464+ owner reports, the 2018 Chevrolet Silverado 1500 has 25 documented issues. The most frequently reported are: Active Fuel Management Lifter Failure, 5.3L V8 (AFM/DFM) collapsed/failed lifter causing ticking and cylinder misfire, P0700 — Transmission Control System Malfunction from Failed 6L80 TEHCM (or 4L60E Shift Solenoid). Of these, 7 are rated critical and should be addressed promptly.
The 2018 Chevrolet Silverado 1500 has 25 known issues documented across 8,464+ owner reports. 7 issues are rated critical: Active Fuel Management Lifter Failure and 5.3L V8 (AFM/DFM) collapsed/failed lifter causing ticking and cylinder misfire and P0700 — Transmission Control System Malfunction from Failed 6L80 TEHCM (or 4L60E Shift Solenoid) and Trailer Brakes Disabled by Incompatible Dexter Electric-Over-Hydraulic Actuator and 5.3L L83 Stretched Timing Chain / Cam Phaser Wear Setting Crank-Cam Correlation Codes and Brake vacuum pump degradation reducing power brake assist (NHTSA recall 19V645) and 8-speed (8L90/8L45) torque converter clutch shudder and harsh shifting. 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.
Repair costs for known Chevrolet Silverado 1500 issues range from $0 to $7,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Active Fuel Management Lifter Failure, typically costs $2,000-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
GM's Active Fuel Management (AFM) system deactivates cylinders to improve fuel economy, but can cause premature lifter wear and failure. Symptoms include rough idle, misfires, and valve train noise. GM released updated lifters. Repairs typically run $2,000-$4,500. Severity: high.
The EcoTec3 5.3L V8 (L83, and later L84 with Dynamic Fuel Management) uses Active Fuel Management to deactivate cylinders 1, 4, 6, and 7 under light load. The AFM lifters that collapse to deactivate those cylinders are prone to sticking or mechanical failure, often during a misti… Repairs typically run $2,500-$7,000. Severity: high.
P0700 is not a specific fault by itself — it is an umbrella/MIL-request code the ECM stores whenever the transmission control module (TCM) detects an internal transmission problem and asks the ECM to turn on the check-engine light. On the Silverado 1500 it almost always appears a… Repairs typically run $300-$1,600. Severity: high.
Silverado 1500 trucks built with the factory Integrated Trailer Brake Control system (RPO JL1) do not simply pass current to the trailer. The Trailer Brake Power Control Module (K133) continuously injects a low-level test pulse onto trailer brake output circuit 47, and the Chassi… Repairs typically run $90-$400. Severity: high.
On the Gen V 5.3L L83 (and 6.2L L86) in the Silverado 1500, the timing chain can stretch and the VVT cam phasers/actuators can wear, causing the camshaft to drift out of correlation with the crankshaft beyond what the variable-valve-timing system can correct. This sets crank/cam… Repairs typically run $1,200-$2,500. Severity: high.
The engine-driven brake vacuum pump on 2014-2018 Silverado 1500 trucks (5.3L and 6.2L V8) can lose vacuum output over time as oil sludge and debris are trapped by the pump's oil inlet filter screen. As vacuum drops, power brake assist decreases, producing a hard brake pedal, incr… Repairs typically run $0-$400. Severity: high.
Silverados equipped with the GM 8L90 (and the lighter 8L45) eight-speed automatic suffer a widespread torque-converter-clutch (TCC) shudder, often described as driving over a rumble strip during light cruising, plus harsh/clunky 1-2 and 2-1 shifts and slipping. GM traced it large… Repairs typically run $300-$3,500. Severity: high.
Both the 8-speed and 10-speed automatic transmissions can develop a shudder during light acceleration. This torque converter clutch issue is widespread across GM trucks. Multiple TSBs have been issued addressing this concern. Repairs typically run $200-$3,500. Severity: medium.
The A/C compressor can fail prematurely, especially on trucks in hot climates or with heavy A/C use. Internal compressor failure can contaminate the entire A/C system with debris, requiring extensive repairs. Repairs typically run $600-$1,800. Severity: medium.
GM's small-block V8s (Gen III/IV LS and Gen V LT) in the Silverado 1500 are notorious for snapping exhaust manifold bolts. The steel bolts and the aluminum cylinder heads expand and contract at different rates through countless heat cycles, fatiguing the bolts until the heads sna… Repairs typically run $250-$900. Severity: medium.
The factory air-conditioning condenser on 2014-2018 Silverado 1500 trucks is prone to cracking and refrigerant leakage, frequently at the spot welds on the sides of the condenser where vibration concentrates stress (revised replacement units add welds to spread the load). The res… Repairs typically run $600-$1,100. Severity: medium.
The full-size Silverado 1500 is one of the most frequently targeted vehicles in the U.S. for catalytic converter theft. Its high ground clearance and underbody-mounted, easily reached converters let thieves cut them out in seconds, often in broad daylight, and lifted trucks are e… Repairs typically run $300-$3,000. Severity: medium.
The rear axle develops a speed-dependent whine or howl that rises and falls with vehicle speed — the hallmark of a worn pinion (or carrier) bearing and/or a wearing ring-and-pinion. As the pinion bearing degrades it often damages the pinion seal, leaking gear oil from the front o… Repairs typically run $300-$1,500. Severity: medium.
Trucks with the column shifter throw a persistent 'Shift to Park' message on the driver information center even though the lever is fully in Park. The cause is a small microswitch/park-confirmation contact behind the lower steering-column trim (to the right of the column) that fa… Repairs typically run $120-$450. Severity: medium.
The center high-mount stop lamp (third brake light / cargo lamp) gasket dries out, cracks, and lets rainwater and car-wash water into the cab. Because the water runs down behind the interior trim and the carpet has a rubber backing, owners often don't see it until the rear floor… Repairs typically run $15-$200. Severity: medium.
A widely reported Silverado 1500 complaint is a sudden cascade of dash messages — 'StabiliTrak disabled,' then 'Service StabiliTrak,' 'Service Traction Control,' and finally 'Engine Power Reduced' — sometimes with a stumble or stall and limited throttle response. The most common… Repairs typically run $150-$700. Severity: medium.
Silverado 1500 trucks with the 8L90 eight-speed (and the older 6L80 six-speed) can run dangerously hot when the factory transmission thermal bypass valve sticks closed, so fluid never reaches the cooler — common under towing or heavy load. Sustained temperatures above ~220-250°F… Repairs typically run $150-$1,200. Severity: medium.
The mechanical (belt-driven) water pump on the LS/LT V8 Silverado 1500 is a common wear-out item. The internal shaft seal fails and coolant seeps from the pump's weep hole, often appearing as orange/Dex-Cool residue or a puddle at the front-center of the truck; the weep-hole drip… Repairs typically run $200-$1,450. Severity: medium.
A steering wheel shake or vibration at highway speeds (60-80 mph) is common on K2 generation Silverados. This is often caused by tire balance issues, but can also be related to worn suspension components or warped brake rotors. Repairs typically run $50-$800. Severity: low.
The aluminum driveshaft on Silverados can develop vibration from worn U-joints or an out-of-balance condition. Additionally, the slip yoke can cause a clunk during shifts or when going from acceleration to deceleration due to worn splines or dry conditions. Repairs typically run $100-$600. Severity: low.
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.