2026 Gmc SIERRA 1500 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
102 owner complaints analyzed
2 distinct recall campaigns
3,657 mi median reported failure mileage
Scope: 2026 model year. Data snapshot: . 11 complaints include usable failure mileage.
Most common problems
Engine is the most frequently named component, appearing in 68 of 102 complaints (66.7%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Transmission and shifting | 23 | 22.5% |
| Braking behavior | 8 | 7.8% |
| Electrical and battery issues | 6 | 5.9% |
| Steering behavior | 6 | 5.9% |
| Engine operation | 4 | 3.9% |
| Fuel system concerns | 2 | 2.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine | 68 |
| Power Train | 24 |
| Electrical System | 11 |
| Unknown Or Other | 8 |
| Fuel/Propulsion System | 7 |
| Steering | 4 |
| Back Over Prevention: Warnings | 3 |
| Forward Collision Avoidance: Automatic Emergency Braking | 3 |
Engine: 68; Power Train: 24; Electrical System: 11; Unknown Or Other: 8; Fuel/Propulsion System: 7; Steering: 4; Back Over Prevention: Warnings: 3; Forward Collision Avoidance: Automatic Emergency Braking: 3
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 11 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 11; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (11). 91 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2025 | 5 |
| 2026 | 97 |
2025: 5; 2026: 97
Pattern summary
Engine leads the component reports. Transmission and shifting appears in 23 complaint narratives. Braking behavior appears in 8 complaint narratives. Electrical and battery issues appears in 6 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11704497 · 2025-12-11 (December 11, 2025)
The contact owns a 2026 GMC Sierra 1500. The contact stated that upon starting the vehicle and shifting into reverse(R), the vehicle failed to move while depressing the accelerator pedal. The contact felt a hesitation while depressing the brake and accelerator pedals, and the contact then attempted to restart the vehicle. The contact restarted the vehicl;e however, while attempting to accelerate, the brakes independently activated. Despite the repeated failure, the contact was able to pull into a gas station to restart the vehicle. The contact …
Owner-reported narrative. 300 miles reported. Look up ODI 11704497 at NHTSA ↗
Owner report 11707315 · 2025-12-28 (December 28, 2025)
My 2026 GMC 1500 is equipped with the 2.7L L3B & 8L90 Transmission. At approximately 1000 miles, I noticed that in 2nd between 2700-3200 RPM, a vibration could be felt throughout the cabin and would occur whether with or without throttle application. I am able to recreate the issue during hard acceleration or placing in manual mode. No matter the Vehicle mode selection (sport, normal, snow, tow/haul, etc.), the issue still persists. I took the vehicle to a local GMC dealer at approximately 6K miles to diagnose. I requested that we test drive an…
Owner-reported narrative. Look up ODI 11707315 at NHTSA ↗
Owner report 11710215 · 2026-01-11 (January 11, 2026)
2026 Sierra 1500 AT4 with 3.0L Duramax Diesel. Three major issues. 1. 2960 miles, thrust bearing failure caused low oil pressure and internal damage. Vehicle needs complete engine replacement. The truck is still at the dealer with no ETA on engine arrival and replacement. 2. Vehicle has severe electrical issues. battery replaced on second day of ownership due to over charge and smoking. The truck would randomly lose the ability to produce sound through infotainment system on start. This includes warning sounds and audible turn signal sound…
Owner-reported narrative. Look up ODI 11710215 at NHTSA ↗
Owner report 11725387 · 2026-03-18 (March 18, 2026)
I had this truck as brand new for approximately 24 hours when it had a major failure. It had 450 miles on it at time of purchase, but was sold as new. While driving at 45MPH it had a check engine light, service power steering message, lost power steering, lane departure system failure, and reduced power amongst several other lights on the dash. I limped the truck into a gas station parking lot. After turning the truck off, it would not restart. I unhooked the battery for a minute and hooked it back up. The truck did restart with no messages or …
Owner-reported narrative. Look up ODI 11725387 at NHTSA ↗
Owner report 11712904 · 2026-01-23 (January 23, 2026)
GMC SUPER CRUISE MALFUNCTION NO WARNING BEFORE SUPERCRUISE SHUTS OFF PASSING A CAR ON FOUR LANE HIGHWAY (SUPER CRUISE ENABLED) SUPER CRUISE SHUT OFF AND TRUCK CONTINUED HEADING FOR THE CENTER GAURD RAIL.(I CAUGHT IT BEFORE IT BECAME AN INCIDENT). SUPER CRUISE ABRUPTLY SHUTS OFF (NO WARNING) AND WITHIN A COUPLE THOUSAND FEET IT TURNS ON. MY FIRST TIME USING SUPERCRUISE AZ HIGHWAY 87 N BOUND JUST BEFORE RYE AND AZ HIGHWAY 260 BETWEEN PAYSON AND CHRISTOPHER CREEK I CALLED MY DEALERSHIP BUT IT WAS LIKE UH HUH OK I'LL LET GM KNOW.- NO SUPPORT! THE …
Owner-reported narrative. Look up ODI 11712904 at NHTSA ↗
Owner report 11719035 · 2026-02-19 (February 19, 2026)
Vehicle stalled in busy intersection in McKinney Texas , unable to start are shift into a neutral position on transmission to remove from extreme dangerous intersection, sheriff advised that road side assistance that was contacted is not going to be in time (90min)to keep from causing an ongoing traffic backup , sheriff dispatched their own towing service to resolve the situation from getting extremely dangerous .vehicle and my wife was towed to McKinney Buick gmc dealership.
Owner-reported narrative. Look up ODI 11719035 at NHTSA ↗
Owner report 11726573 · 2026-03-23 (March 23, 2026)
MY 2026 GMC Sierra AT4 1500 6.2 L87 engine had a catastrophic failure with only 3347 miles. It stalled twice while driving home, when pulling into my driveway it stalled a third time and would not start after that. Before having my vehicle towed to the Dealer from my home I connected my code reader and it posted code P0016. After being diagnosed by the dealer they informed me I needed an entire new engine. There were no warning lights or message prior to this failure My vehicle was purchased 9 week prior.
Owner-reported narrative. Look up ODI 11726573 at NHTSA ↗
Owner report 11759297 · 2026-08-25 (August 25, 2026)
Bought the vehicle brand new at the end of april. 2 weeks later and at 557 miles, the engine had a lifter failure and needed to be replaced. One day after picking it up after the engine replacement, a fuel injector went bad and needed to be replaced. About 2 days ago, the check engine light lit up, and the GMC app said it was a code for the transmission system (popped on after attempting to remote start the vehicle, although the light did shut off on its own the next day after a software update on the vehicle)
Owner-reported narrative. Look up ODI 11759297 at NHTSA ↗
Owner report 11759298 · 2026-08-25 (August 25, 2026)
I bought the vehicle brand new in april 2026. On May 3rd, approximately 2 weeks after I bought it, I experienced a lifter failure that caused metal to get into the oil pan/engine and the engine needed to be replaced. About a month later after repairs were complete, I picked up my vehicle on a Friday night, and the very next morning, had issues again. Took it back to the dealer and a fuel injector went bad and needed to be replaced. I recently attempted to use the remote start feature and as soon as it fired up, the engine cut out. I went to sta…
Owner-reported narrative. Look up ODI 11759298 at NHTSA ↗