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What 16 owners told NHTSA about the 2025 GMC Savana Passenger 3500 12 Pass

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 (16)Brakes (5)Electrical system (3)Driver assistance (2)Engine (2)Tires (2)Body & structure (1)Engine & cooling (1)Equipment (1)Lane Departure (1)Lights (1)

2 of 16 complaints match · Engine · clear filters

Dec 22, 2025Engine

Oil cooler for truck is defective and thus allowed all oil to be mixed with the coolant. GM is stating they will flush engine and replace with exact same part. Very common issue and sad to have a $100k truck and it is junk.

NHTSA ODI 11706444

Nov 29, 2025Engine

“I own a 2025 GMC Sierra with 30,000 miles. The oil cooler failed and caused loss of oil pressure and potential internal engine damage. The dealership acknowledges the failure but refuses to escalate the case or perform a proper inspection. I am being instructed to continue driving the truck even though it may suffer catastrophic failure while driving. This is a safety hazard.”

NHTSA ODI 11701995

Working with the data? Download all 16 complaints as CSV · fetched from NHTSA July 21, 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 Savana Passenger 3500 12 Pass verdict →