10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 miles

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problem #2

Jul 052023

Sierra 3500

  • miles
my 2011 fmc sierra 3500 drw denali suffered a failure of the Transmission Control Module (TCM). I could barely move the vehicle and almost got into an accident merging into traffic. Forward and reverse was affected. The transmission reverts to top gear after the failure, and makes driving very difficult. There was no warning for this failure Luckily I was minutes from my dealership. This problem could be bad.

- Alvord, TX, USA

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problem #1

Feb 222023

Sierra 3500

  • miles
Apparently a common issue. The TCM (Transmission Control Module) failed and the vehicle will not start or shift. Vehicle went into limp mode on highway while towing a trailer. Part availability unknown and on backorder for a year.

- Silver Spring, MD, USA

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