Head-to-head reliability
GMC Sierra vs GMC Acadia
How the GMC Sierra and GMC Acadia compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
GMC Sierra vs GMC Acadia: The Sierra has 365.5 complaints per year and 90 recalls, with engine smoking and transmission shudder common. The Acadia has 186.8 complaints per year and 24 recalls, with park failures and unexpected horn activation reported. Source: NHTSA owner complaints.
The picture
Is the GMC Sierra or GMC Acadia more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
GMC Sierra
The GMC Sierra is a full-size pickup with a high complaint rate of 365.5 per year, dominated by engine and powertrain issues. Owners report engines smoking and burning oil at low mileage, transmissions shuddering or failing to find gears, and rear wheels locking up without warning. The 90 recalls and frequent electrical and brake complaints suggest a vehicle that may require frequent dealer visits.
GMC Acadia
The GMC Acadia is a midsize SUV with about half the complaint rate of the Sierra (186.8 per year). Its top issues are powertrain and electrical, with owners reporting transmission problems, unexpected horn activation, and failure to shift into park. While less severe than the Sierra's engine failures, the Acadia's issues still affect daily usability and safety.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | GMC Sierra | GMC Acadia |
|---|---|---|
| Total complaintsAll model years combined | 3,655 | 1,868 Better |
| Safety recallsFederal recall campaigns | 90 | 24 Better |
| Crash reportsCrash-related complaints | 96 | 39 Better |
| Complaints per yearAveraged across model years | 365.5 | 186.8 Better |
| Reported injuriesTied to owner complaints | 55 | 43 Better |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
GMC Sierra
- 01ENGINE1,243
- 02POWER TRAIN932
- 03SERVICE BRAKES569
- 04ELECTRICAL SYSTEM565
- 05UNKNOWN OR OTHER321
Owners report engines smoking and burning oil as early as 2,000 miles, with smoke entering the cabin. Some proactively report concerns about the 6.2L V8 L87 engine, and thrust bearing failure requiring complete engine replacement has occurred.
Transmissions shudder and struggle to find gears, and rear wheels can spontaneously lock up at highway speeds without warning, posing a serious safety risk.
Brake issues include spontaneous rear wheel lockup and hesitation when shifting into reverse, where the vehicle fails to move despite depressing the accelerator.
Electrical problems manifest as hesitation when shifting into reverse and failures linked to the powertrain control module, often requiring software updates or module replacement.
“On or about 12/14/25 at approximately 2,000 miles my engine began smoking to the point that it was pushing in to the interior of the cabin and created a cloud like atmosphere that smelled of burning oil. There were no warning messages in the vehicle or in the…”
“I am the owner of a 2026 GMC Sierra 1500 Denali Ultimate equipped with the 6.2L V8 L87 engine (VIN: [XXX] ), purchased new approximately three months ago. I am filing this complaint proactively. I have experienced no engine failure or symptoms to date. Howeve…”
GMC Acadia
- 01POWER TRAIN599
- 02ELECTRICAL SYSTEM496
- 03UNKNOWN OR OTHER453
- 04ENGINE226
- 05SERVICE BRAKES158
Transmission problems are common, with vehicles failing to shift into park despite the button indicating park, causing unintended rollaway. Cooling system failures (thermostat, radiator) also occur.
The horn may sound unexpectedly while driving or parked, and batteries fail prematurely (within two years). These issues can be distracting and dangerous.
Check engine lights illuminate due to emissions system failures, and the vehicle can lose motive power with the stability track warning light on, indicating potential engine or transmission control issues.
The vehicle may fail to engage park, leading to rollaway incidents. This is a critical safety concern that has been reported multiple times.
“This vehicle was bought brand new and has received proper maintenance from one dealership since purchasing. I had to replace the thermostat and radiator before owning the vehicle three years. Within two years of owning the vehicle, my battery went out, which…”
“There are currently approximately 22,000 miles on this vehicle. On approximately December 22, 2023, the car was operating normally, and has been since purchased with 3 miles on it, the car was being parked into a flat parking spot at a local store, when the c…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
GMC Sierra — 90 recalls
The defect: General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Cou…
The risk: Without an owner's manual to consult, owners may not know how to safely use and operate the vehicle, increasing the risk of injury in a crash.
The fix: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters were mailed April 16, 2026. Owners may contact GM customer service at 1-866-467-970…
The defect: General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehicles with four-wheel (4WD) or all-wheel drive (AWD), and certain 2015-2020 Suburban, Escalade, Escalade ESV, Yukon, Yuko…
The risk: Front or rear wheel lockup increases the risk of a crash.
The fix: Owners are advised not to drive their vehicle until the remedy is completed. Dealers will inspect and, if necessary, replace the transfer case assembly, free of charge. Owner notification letters are expected to be mailed June 22, 2026. Ow…
The defect: General Motors, LLC (GM) is recalling certain 2025-2026 Chevrolet Silverado 3500, and GMC Sierra 3500 vehicles with gasoline engines and dual fuel tanks (RPOs L8T and N2N). The rear fuel pump may not transfer adequate fuel to the front tank, causing an engine stall.
The risk: An engine stall increases the risk of a crash.
The fix: The vehicle's engine control module (ECM) will be updated by a dealer or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed April 8, 2026. Owners may contact GMC customer service at 1-800-462-8782…
The defect: General Motors, LLC (GM) is recalling certain 2026 Chevrolet Silverado EV and GMC Sierra EV electric vehicles. After experiencing an electronic stability control (ESC) system malfunction, the ESC malfunction warning light may not illuminate on the next key cycle. As such, these vehicles fail to com…
The risk: An indicator light that does not illuminate may fail to warn the driver of an ESC system issue, increasing the risk of a crash.
The fix: The EBCM software will be updated by a dealer, or through an over-the-air (OTA) software update, free of charge. Owner notification letters were mailed October 15, 2025. Owners may contact Chevrolet customer service at 1-800-222-1020, or G…
GMC Acadia — 24 recalls
The defect: General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Cou…
The risk: Without an owner's manual to consult, owners may not know how to safely use and operate the vehicle, increasing the risk of injury in a crash.
The fix: Dealers will reset the vehicle radio, which will facilitate automatic download of the electronic owner’s manual, free of charge. Owner notification letters were mailed April 16, 2026. Owners may contact GM customer service at 1-866-467-970…
The defect: General Motors, LLC. (GM) is recalling certain 2022 GMC Acadia vehicles. The sensing diagnostic module (SDM) may have been 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 Sa…
The risk: The air bags will not deploy with an unactivated SDM, increasing the risk of injury in a crash.
The fix: The vehicles will be returned to the assembly plant for SDM activation. Both affected vehicles are still in dealer inventory and therefore no owner notification letters will be mailed. Owners may contact GMC 1-800-462-8782. GM's number for…
The defect: 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.
The risk: A loose toe link can separate and cause a loss of vehicle control, increasing the risk of a crash.
The fix: Dealers will inspect the left-rear suspension and replace the fastener if it is loose or missing, free of charge. Owner notification letters were mailed July 11, 2022. Owners may contact Cadillac customer service at 1-800-458-8006 or GMC c…
The defect: General Motors, LLC (GM) is recalling certain 2022 Cadillac XT5, XT6, and GMC Acadia All-Wheel Drive (AWD) vehicles. The fuel tank rollover valve may not provide a proper seal in the event of a rollover crash.
The risk: A fuel tank rollover valve that does not properly seal can result in a fuel leak during a rollover crash, increasing the risk of a fire.
The fix: Dealers will inspect the fuel tank and replace the fuel tank shell if the rollover valve is found to be dislodged or missing, free of charge. Owner notification letters were mailed July 27, 2022. Owners may contact Cadillac customer servic…
Buyer analysis
GMC Sierra or GMC Acadia: which should you buy?
The GMC Acadia has roughly half the complaint rate of the Sierra (186.8 vs 365.5 per year) and fewer recalls (24 vs 90). While both have serious issues, the Sierra's engine and brake failures are more severe and frequent, making the Acadia the less problematic choice for most buyers.
Key differences
- Sierra has 2x the complaint rate of Acadia (365.5 vs 186.8 per year) and 3.75x more recalls (90 vs 24).
- Sierra owners report engine smoking and burning oil at low miles; Acadia owners report transmission park failures and unexpected horn sounds.
- Sierra has spontaneous rear wheel lockup; Acadia has loss of motive power with stability track warning.
- Sierra's top issue is engine (1243 complaints); Acadia's top is powertrain (599 complaints).
- Check for engine smoke or burning oil smell, especially on the 6.2L V8 L87 engine, and inspect for any signs of oil leaks.
- Test drive at highway speeds to feel for transmission shudder or hesitation, and verify brakes don't lock up spontaneously.
- Test the park function repeatedly: shift into park and ensure the vehicle doesn't roll, even on a flat surface.
- Listen for unexpected horn activation and check battery age; if original battery is over 2 years old, consider replacement.
Before you buy
- Obtain a vehicle history report to check for open recalls on both models.
- For Sierra: perform a cold start and look for blue/white smoke; test transmission in stop-and-go traffic.
- For Acadia: test park engagement on an incline; verify horn works normally and doesn't sound randomly.
- Inspect service records for engine or transmission repairs on Sierra; for Acadia, check for thermostat/radiator replacements.
- Have a trusted mechanic perform a pre-purchase inspection focusing on the engine and powertrain.
Year by year
Which model years to avoid
Complaints per model year for both vehicles — lower is better. The spikes are the years to scrutinize.
| Year | GMC Sierra | GMC Acadia |
|---|---|---|
| 2026 | 61 | 3 |
| 2025 | 116 | 58 |
| 2024 | 444 | 53 |
| 2023 | 445 | 38 |
| 2022 | 0 | 45 |
| 2021 | 563 | 142 |
| 2020 | 0 | 92 |
| 2019 | 1070 | 364 |
| 2018 | 359 | 383 |
| 2017 | 597 | 690 |
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific GMC Sierra or GMC Acadia in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- GMC Sierra vs GMC Acadia
- GMC Sierra total complaints
- 3,655
- GMC Acadia total complaints
- 1,868
- GMC Sierra total recalls
- 90
- GMC Acadia total recalls
- 24
- GMC Sierra avg complaints/year
- 365.5
- GMC Acadia avg complaints/year
- 186.8
- More reliable overall
- GMC Acadia
- GMC Sierra top complaint area
- ENGINE
- GMC Acadia top complaint area
- POWER TRAIN