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What 6 owners told NHTSA about the 2026 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 (6)Electrical system (2)Steering (2)Brakes (1)Engine (1)Fuel system (1)Seats (1)Tires (1)

1 of 6 complaints match · Brakes · clear filters

Apr 29, 2026SteeringBrakes

Brand new delivery there was a noise that changes with engine RPM. It also changed with turning the steering wheel. The dealer diagnosed a bad power steering pump. Due to possible metallic contamination all related parts that are connected to the power steering pump including the HydroBoost brake assist are going to be replaced

NHTSA ODI 11734694

Working with the data? Download all 6 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 2026 GMC Sierra 2500 Hd verdict →