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What 35 owners told NHTSA about the 2018 GMC Sierra 2500 Hd

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (35)Crash / fire / injury (2)Engine (8)Electrical system (7)Fuel system (5)Equipment (4)Lights (4)Tires (3)Transmission & drivetrain (3)Visibility & wipers (2)Backup camera & sensors (1)Fuel System, Diesel (1)

1 of 35 complaints match · Backup camera & sensors · clear filters

Aug 21, 2023SteeringElectrical systemBackup camera & sensors

While braking ( after being on the highway) all dash gauges turn black, radio shuts off, AC shuts off. Service Stabilitrak light comes on when dash flashes back on. While driving AC turns off, Radio turns off same stabilitrak warning flashes, speedometer turns off. Power steer control went out while trying to turn. Truck put itself in 4 wheel drive when I turned on the trailer assist. Parking assist periodically turns itself off.

NHTSA ODI 11539836

Working with the data? Download all 35 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 GMC Sierra 2500 Hd verdict →