Home · 2026 GMC Sierra 2500 Hd · Complaints

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 · Tires · clear filters

May 26, 2026Tires

DOT AH9K82 3425 LT265/70R17 121/118Q All four brand new tires on my brand new truck have bulges on the sides of the tires. The truck feels floaty and unsafe at highway speeds. The car dealership is saying it’s fine, won’t replace them, and says it’s a known issue with the tire.

NHTSA ODI 11740229

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 →