The 2022 Silverado 1500 ZR2 with the 6.2L L87 V8 is GM's off-road flagship truck, but it carries troubling engine reliability issues stemming from lifter and oil system problems that can cascade into catastrophic failures requiring complete engine rebuilds.
Lifter Failure Leading to Catastrophic Engine Damage
Occasional · high severity
Typical onset: 15,000-60,000 mi
Symptoms: Ticking or tapping noise on cold start that may disappear when warm, Check engine light with misfire codes, Loss of power or rough idle, Metal shavings in oil, Sudden loss of compression in one or more cylinders
Fix: The L87's AFM/DFM lifters can fail prematurely, collapsing and sending metal debris through the engine. This destroys cam lobes, damages bearings, scores cylinder walls, and contaminates the entire oil system. Requires complete engine teardown or replacement. If caught early with just lifter damage, expect 18-24 hours labor for lifter replacement, AFM delete, and cam. If metal circulated, you're looking at short block or complete engine replacement at 30-45 hours labor.
Estimated cost: $4,500-8,500 for early catch with lifters/cam; $12,000-18,000 for short block or long block replacement
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Transmission fluid dripping from front of vehicle, Low transmission fluid warnings, Fluid spots on driveway after parking, Burnt transmission smell if fluid runs low
Fix: The 10-speed 10L80 transmission cooler lines develop leaks at the crimp fittings or where they connect to the radiator. Off-road use accelerates this due to vibration and debris impact. Replacement involves draining system, removing skid plates for access, replacing lines, and refilling with ATF. Count on 3-4 hours labor plus fluid.
Estimated cost: $600-1,200
Transmission Mount Failure
Occasional · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: Clunking when shifting from park to drive or reverse, Vibration felt through cabin at idle, Excessive drivetrain movement visible when accelerating hard, Transmission sag visible on inspection
Fix: The ZR2's aggressive off-road use and the torque from the 6.2L punish the transmission mount, causing the rubber to tear or separate. Requires supporting the transmission, removing crossmember hardware, and replacing mount. Plan 2-3 hours with proper lifting equipment.
Estimated cost: $400-700
Piston Ring and Cylinder Wall Damage from Oil Consumption
Occasional · high severity
Typical onset: 25,000-70,000 mi
Symptoms: Excessive oil consumption (1 quart per 1,000 miles or worse), Blue smoke from exhaust on startup or acceleration, Fouled spark plugs, Loss of power, Eventually progresses to rod knock or bearing failure
Fix: Related to the lifter issue but sometimes independent: the L87 can develop piston ring sealing problems and cylinder wall scoring. AFM/DFM operation contributes by allowing oil to bypass rings during cylinder deactivation. Once scoring occurs, requires complete teardown with cylinder honing or reboring, new pistons, rings, and bearings. This is a 35-40 hour job minimum for proper machine work and reassembly.
Estimated cost: $8,000-14,000
Fuel System Contamination and Filter Clogging
Occasional · medium severity
Symptoms: Hard starting or extended cranking, Loss of power under load, Rough idle or surging, Check engine light with fuel trim or pressure codes
Fix: The high-pressure direct injection system is sensitive to fuel contamination. Off-road use can stir up sediment in the tank, and some owners report issues with tank manufacturing debris. When the in-tank fuel pump module filter clogs, requires dropping the tank (challenging with skid plates and spare tire), replacing pump module and potentially cleaning tank. Count 4-6 hours labor.
Estimated cost: $800-1,500
Head Gasket Failure Following Overheat Events
Rare · high severity
Typical onset: 40,000-100,000 mi
Symptoms: White smoke from exhaust, Coolant loss with no visible leaks, Oil looks milky or has coolant mixed in, Overheating, Misfires and rough running
Fix: While not common on unmolested engines, head gaskets can fail if the truck overheats from coolant loss, thermostat failure, or extreme off-road use in hot climates. The aluminum heads on iron block expand differently. Requires removing both heads, machining if warped, new gaskets, and reassembly. Figure 16-20 hours labor plus machine shop time.
Estimated cost: $3,500-6,000
Owner tips
Disable AFM/DFM immediately with a Range Technology device or tune to prevent lifter failure — this is cheap insurance at $300-500 versus a $15K engine
Run full synthetic oil (0W-20 or 5W-30) and change every 5,000 miles maximum, not the 7,500+ oil life monitor suggests — the L87 is hard on oil
Check oil level every fill-up; these engines can start consuming oil with no warning
Inspect transmission cooler lines and skid plate area regularly for leaks, especially after trail riding
Use quality fuel from busy stations to minimize contamination risk in the high-pressure fuel system
If you hear any ticking or tapping at startup, get it diagnosed immediately before metal debris circulates
Skip it unless you can verify AFM/DFM was deleted and the engine has documented clean oil analysis — the lifter failure risk makes this a ticking time bomb despite being an excellent off-road platform otherwise.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE · 26V083000
2026-02-12
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.
Consequence: Rear wheel lock up increases the risk of a crash.
Remedy: Dealers will inspect the vehicles and update the transmission control software, free of charge. Owner notification letters were mailed March 6, 2026. Owners may contact GMC customer service at 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252516560. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 12, 2026.
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL · 25V274000
2025-04-24 · PE25001
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.
Consequence: Engine failure increases the risk of a crash.
Remedy: Dealers will inspect the engine, and as necessary, repair or replace the engine. For vehicles that pass inspection, dealers will add higher viscosity oil, install 6 oil fill cap, replace the oil filter, and update the owner's manual. Repairs will be performed free of charge. Owner notification letters were mailed June 18, 2025. Owners may contact Cadillac customer service at 1-800-333-4223, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N252494000.
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE · 24V797000
2024-10-24
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Consequence: Rear wheel lock-up can increase the risk of a crash.
Remedy: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE · 22V903000
2022-12-08
General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The daytime running lights (DRLs) may not deactivate when the headlights are on. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence: DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing the risk of a crash.
Remedy: The body control module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed January 23, 2023. Owners may contact GMC customer service at 1-888-988-7267, Chevrolet customer service at 1-800-222-1020, or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N222386380. This recall expands previous recall number 22V-827.
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE · 22V873000
2022-11-23
General Motors, LLC (GM) is recalling certain 2022 Chevrolet Silverado 1500 vehicles. The sensing diagnostic module (SDM) was left in manufacturing mode and not activated at the assembly plant prior to shipment. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Consequence: An SDM in manufacturing mode will not deploy the vehicle's air bags in a crash, increasing the risk of occupant injury.
Remedy: Dealers returned the vehicles to the GM assembly plant and the sensing diagnostic modules were activated. The vehicles had not been sold from dealer inventory and therefore no owner letters will be mailed. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222387870.
EXTERIOR LIGHTING:BRAKE LIGHTS · 22V463000
2022-06-30
General Motors (GM) has decided that certain 2022 model year Chevrolet Silverado, and GMC Sierra vehicles equipped with an accessory sport bar. The accessory sport bar contains a high-mounted brake light that may not function. In addition, it may block the vehicle's existing high-mounted brake light. As such, these vehicles may fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 108, "lamps, reflective devices, and associated equipment."
Consequence: An inoperative high-mounted brake light can reduce visibility to other drivers and increase the risk of a crash.
Remedy: Dealers will inspect the installation of the accessory bar and provide the correct vehicle wiring, if necessary, free of charge. Interim owner notification letters advising owners of the safety risk were mailed on August 10, 2022. Owner notification letters were mailed on January 27, 2023. Owners may contact GM's customer service on 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020.. GM's recall number for this recall is N222368110.
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