2012 Chevrolet Silverado 2500HD: Power Train complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 16 owner complaints for the 2012 Chevrolet Silverado 2500HD that list the power train component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11654876 (filed 04/15/2025): “The vehicle's tcm has apparently failed as evidenced by cel code "u0101", low power ("limp mode"), hard shifting, no gear selection indicator, and extremely slow acceleration. vehicle is currently available for inspection, but will be receiving a replacement tcm soon. myself and others' safety was p…”
- NHTSA complaint ODI #11542321 (filed 09/02/2023): “My tcm went out in my truck while towing which made the vehicle not be able to move putting my family in jeopardy while on the road.…”
- NHTSA complaint ODI #11536536 (filed 08/04/2023): “Transmisión control module stopped working while driving on the highway. it went from going 70 miles per hour on the highway to 15 miles per hour. very scary and dangerous.…”
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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