Dec 9, 2025Transmission & drivetrain
The 2025 GMC Sierra 2500 HD, equipped with the 10-speed "Allison" transmission, rough shifting,
NHTSA ODI 11703871
Home · 2025 GMC Sierra Hd · Complaints
What 1 owners told NHTSA about the 2025 GMC Sierra 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.
Newest first · 1 complaints
Working with the data? Download all 1 complaints as CSV · fetched from NHTSA July 18, 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 2025 GMC Sierra Hd verdict →