GMC Sierra 1500 / 2026
2026 GMC Sierra 1500 problems
Owners have filed 114 complaints about the 2026 GMC Sierra 1500 with NHTSA. Engine accounts for 44.7% of them — far more than any other system, ahead of power train at 15.8%.
Complaints114
Crashes0
Fires0
Injuries0
Deaths0
What owners report breaking
Engine 44.7% · 51
Power train 15.8% · 18
Electrical system 7.0% · 8
Forward collision avoidance 6.1% · 7
Unknown or other 4.4% · 5
Back over prevention 3.5% · 4
Steering 3.5% · 4
Fuel/propulsion system 3.5% · 4
Reading the numbers
Across the 29 model years of the GMC Sierra 1500 in this data, 2026 draws comparatively few complaints; 2014 is the outlier year.
The median odometer reading at the time of complaint was 4,110 miles.
In owners' own words
While driving on the highway, the steering became much more stiff, and then I heard metallic clanging sounds for a few seconds. The dashboard said press start to start Vehicle. I pressed start while going 30 miles an hour and all lights and instrument clusters went black. I pulled into the grass median where the truck would not start or shift gears. Truck was towed to a GMC dealership Engine
The contact owns a 2026 GMC SIERRA 1500. The contact stated while driving 40 MPH, the vehicle independently engaged into limp mode. A dealer was contacted. The vehicle was towed to the dealer where it was diagnosed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified on the failure. The approximate failure mileage was 10,000. Engine · reported at 10,000 miles
2026 GMC Sierra Elevation X31 with 3.0 Duramax Diesel engine, 132-miles, thrust bearing 1.53-mm out of tolerance requiring engine and turbo replacement. Engine build date 25219 (07 AUG 2025), vehicle assembly date August 2025, purchased 10 OCT 2025, entered service for engine and turbo failure on 11 NOV 2025, returned 10 JAN 2026. Engine
Verbatim from NHTSA filings. Complaints are unverified owner reports.
Safety recalls
Checking NHTSA for open recalls…