2025 Chevrolet Silverado 2500HD: Power Train complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 10 owner complaints for the 2025 Chevrolet Silverado 2500HD that list the power train component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11766852 (filed 09/25/2026): “- multiple system failure. truck presented with oil or atf leaking from the transmission bell housing and transmission inspection port cover. first detected by me at 30k mile oil change. prior to this, my wife and i both complained that the truck was very slow to get into gear from a stop, especiall…”
- NHTSA complaint ODI #11758589 (filed 08/21/2026): “While driving at a speed of around 40 mph on a paved city street in bozeman, mt, i heard and felt a super loud clunk in my chevy engine transmission or drive train.. i immediately stopped to see if something ran into the vehicle. no apparent visual damage of any kind. it felt and sounded like like s…”
- NHTSA complaint ODI #11757271 (filed 08/16/2026): “While launching a boat. truck was in park and boat off the trailer. i was out of truck 30' on the dock reaching for boat rope ( was a single person boat launch). i heard a loud pop and the truck went into the lake till it hit the dock. several witnesses to this story. glad i didn't have to go …”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Pro
Diagnosis needs a scan tool; repair or replacement needs a lift, transmission jack and the manufacturer's fluid fill/relearn procedure. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
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