The 2015 Sierra 1500 with the 5.3L V8 is generally solid but notorious for Active Fuel Management (AFM) lifter failures and transmission fluid cooler line leaks that can grenade the transmission if ignored. These two issues dominate the repair landscape for this platform.
AFM Lifter Failure / Collapsed Lifters
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Prominent ticking or knocking from engine, especially at idle, Check engine light with P0300 random misfire or cylinder-specific misfire codes, Loss of power, rough idle, or dead miss on one cylinder, Metal shavings in oil during changes
Fix: Collapsed AFM lifters damage cam lobes and require full lifter replacement, often both camshafts, plus AFM delete kit to prevent recurrence. Expect 18-24 labor hours for proper repair with heads off. Many techs recommend full AFM/DOD delete with tuning.
Estimated cost: $3,500-6,500
Transmission Oil Cooler Line Leaks
Common · high severity
Typical onset: 60,000-120,000 mi
Symptoms: Transmission fluid dripping from radiator area or passenger side of transmission, Pink or red fluid puddles under vehicle, Low transmission fluid level on dipstick, Harsh shifting or slipping if fluid gets critically low
Fix: The quick-connect fittings at the radiator corrode and leak. If not caught early, debris enters transmission and destroys clutch packs. Line replacement is 2-3 hours, but if contamination occurs, expect full transmission rebuild or replacement at 12-16 hours.
Estimated cost: $400-800 for lines alone, $3,000-5,000 if transmission damaged
Excessive Oil Consumption (AFM-related)
Common · medium severity
Typical onset: 70,000-130,000 mi
Symptoms: Burning through 1+ quart of oil every 1,000-2,000 miles, Blue smoke on startup or acceleration, Fouled spark plugs, Low oil warnings between changes
Fix: AFM system causes piston ring flutter and valve seal wear. Proper fix requires piston ring replacement and valve seals, sometimes full short block if cylinder walls are scored. Conservative approach: 20-28 hours for complete engine rebuild with updated components.
Estimated cost: $4,000-7,500
Water Pump Failure
Occasional · medium severity
Typical onset: 80,000-140,000 mi
Symptoms: Coolant leak from front of engine, Squealing or grinding noise from accessory drive, Engine overheating, Visible coolant weepage at pump weep hole
Fix: Factory water pumps develop seal or bearing failures. Replacement is straightforward at 3-4 hours, but recommend doing thermostat and hoses at same time since cooling system is already opened.
Estimated cost: $600-1,000
EVAP Purge Valve / Vent Valve Failures
Occasional · low severity
Typical onset: 50,000-100,000 mi
Symptoms: Check engine light with P0449, P0455, or P0446 codes, Fuel smell near vehicle, Difficulty filling fuel tank (premature shutoff at pump), Hard start after refueling
Fix: Both purge valve (on engine) and vent valve (near tank) commonly fail. Purge valve is 0.5 hours, vent valve near tank is 1.5-2 hours due to access. Diagnose with smoke test to avoid throwing parts.
Estimated cost: $200-500
Electric Power Steering (EPS) Failures
Occasional · high severity
Symptoms: Sudden loss of power steering assist while driving, Service power steering message on dash, Extremely heavy steering effort, Intermittent steering assist cutting in and out
Fix: EPS motor or control module fails, often no warning. This is a known issue with TSBs and recalls. Replacement is 2-3 hours for motor assembly. GM updated parts under warranty extension for some VINs, check eligibility before paying out of pocket.
Estimated cost: $800-1,400
Owner tips
Disable AFM with a Range device or full delete kit as preventive maintenance around 60k-80k miles — costs $400-800 but prevents $5k+ engine work
Check transmission cooler lines every oil change for seepage; catch leaks early before contamination
Use high-quality synthetic oil (Mobil 1, Pennzoil Ultra) and consider 3,000-mile intervals if AFM is still active to slow lifter degradation
Keep detailed oil consumption logs — if burning more than 1qt per 2,000mi, address immediately before catastrophic failure
Buy if AFM has already been deleted or you budget $1,500 immediately for preventive delete; otherwise the lifter lottery makes this a gamble past 80k miles despite the truck's overall capability.
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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General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500, 2500, 3500, and Chevrolet Silverado 1500, 2500, and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator, or the inflator sidewall may rupture.
Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Interim owner notification letters informing owners of the safety risk were mailed on August 18, 2021. Owners will receive a second notice when the remedy is available. Phase I owner notification letters were mailed on May 5, 2022. Phase II owner notification letters are expected to be mailed on May 31, 2022. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. This recall supersedes NHTSA recall number 20V-736. GM's number for this recall is N202324251.
SEAT BELTS:FRONT · 21V245000
2021-04-08 · EA20002
General Motors, LLC (GM) is recalling certain 2014-2016 Chevrolet Silverado 1500, 2015-2016 Chevrolet Tahoe, and 2014-2015 GMC Sierra 1500 vehicles that may have received an incorrect replacement tensioner cable assembly as part of a previous recall remedy or a subsequent repair. The flexible steel cable connecting the driver's seat belt to the outboard side of the seat may be repeatedly bent over the seat side shield as the driver enters and exits the vehicle causing the cable to fatigue and separate.
Consequence: A broken pretensioner cable reduces the effectiveness of the driver's seat belt, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will replace the driver seat belt lap pretensioner, free of charge. The recall began on May 5, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC customer service at 1-800-462-8782. GM's number for this recall is N212330040.
AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR · 20V736000
2020-11-25
General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500 and Chevrolet Silverado 1500 and 2015 GMC Sierra 2500 and 3500, and Chevrolet Silverado 2500 and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator.
Consequence: If the end cap separates from the inflator, the compressed gas will escape and the end cap can be propelled into the vehicle, increasing the risk of injury or a crash.
Remedy: GM will notify owners, and dealers will replace the RRAB modules on the left and/or right side, free of charge. Interim owner notification letters were mailed on December 22, 2020. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. Note: GM filed a new recall, number 21V-504 that supersedes this recall. All vehicles previously recalled under 20V-736 will now be repaired under the new recall number 21V-504. GM's numbers for this recall are N202309680, N202309681, and N202309682.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING · 19V761000
2019-10-24
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
Consequence: Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the vehicle to pull to one side unexpectedly, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192261050.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM · 19V645000
2019-09-06 · PE18012
General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time.
Consequence: As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N192268490.
STEERING:ELECTRIC POWER ASSIST SYSTEM · 18V586000
2018-09-07
General Motors LLC (GM) is recalling certain 2015 Chevrolet Silverado 1500, Tahoe and Suburban, GMC Sierra 1500 and Yukon, and Cadillac Escalade vehicles. Electric power steering (EPS) assist may be lost momentarily, followed by a sudden return of EPS assist.
Consequence: If EPS assist is lost and then suddenly returns, the driver may have difficulty steering the vehicle, especially at low speeds, increasing the risk of a crash.
Remedy: GM will notify owners, and dealers will update the EPS module software, free of charge. The recall began October 12, 2018. Owners may contact Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020 and GMC customer service at 1-800-462-8782. GM's number for this recall is 18289.
AIR BAGS:FRONTAL · 17V437000
2017-07-10
General Motors LLC (GM) is recalling certain model year 2014-2016 Buick Lacrosse and Chevrolet Spark EV, Caprice PPV and SS vehicles, 2014-2017 Buick Encore and Chevrolet Corvette, Silverado 1500 and GMC Sierra 1500 vehicles, 2015-2016 Cadillac Escalade and Escalade ESV, Chevrolet Tahoe, Trax, Suburban and Silverado 2500 and 3500 and GMC Yukon and Yukon XL vehicles, and 2015-2017 GMC Sierra HD 2500 and 3500 vehicles. While being previously remedied for recall 16V-651, the affected vehicles may not have received the complete software update necessary to remedy the recall condition. Without the update, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on August 4, 2017. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 17287.
AIR BAGS:FRONTAL · 16V651000
2016-09-08
General Motors LLC (GM) is recalling certain model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles and 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore, and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles. In the affected vehicles, certain driving conditions may cause the air bag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the frontal air bags and the seat belt pretensioners would not occur in the event of a crash.
Consequence: A failure of the front air bags or seat belt pretensioners to deploy in the event of a crash necessitating deployment increases the risk of injury to the driver and front passenger.
Remedy: GM will notify owners, and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The recall began on October 13, 2016. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 16007.
SEAT BELTS · 16V209000
2016-04-12
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks manufactured January 29, 2013, to January 21, 2015. While entering the vehicle, the seat belt tensioner cable may be positioned such that the driver slides over it. This movement may result in the fatigue and separation of the cable.
Consequence: If the tensioner cable separates, the driver may not be properly restrained in the event of a crash, increasing their risk of injury.
Remedy: GM will notify owners, and dealers will modify the vehicles to prevent the tensioner from being damaged. Any tensioner that has already been damaged will be replaced, free of charge. The recall began on August 11, 2016. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is 15822.
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