2020 Chevrolet Silverado 2500HD: Power Train complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 33 owner complaints for the 2020 Chevrolet Silverado 2500HD that list the power train component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11765810 (filed 09/21/2026): “While driving on the highway our transmission cooling line completely separated at rubber hose to metal line crimp. this cause transmission fluid to burst out all over the vehicle including the windshield and trailer. vehicle immediately stopped pulling and we barely were able to get to the side o…”
- NHTSA complaint ODI #11764917 (filed 09/17/2026): “The contact owns a 2020 chevrolet silverado 2500. the contact stated that the transmission shuddered and hesitated while driving 55 mph or at higher speed. the vehicle was taken to the dealer; however, the dealer was no longer in business. while driving at various speeds, the lifters were squeaking.…”
- NHTSA complaint ODI #11763038 (filed 09/09/2026): “2 of the 4 balance weights from front axle propeller shaft have become detached from their welds. found on chassis during routine maintenance and visual inspection. truck was just outside window of recall n202314870, contacted gm customer care to confirm no recall work was preformed and vehicle is o…”
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.
Typical parts (search links, no affiliate codes)
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