2016 GMC Sierra 2500HD: Transmission failure
Common wear/failure (not a recall)
Symptoms
Owners of the 2016 Sierra 2500HD report: transmission failure. CarComplaints.com lists 1 owner complaints, average mileage 11,000 miles.
NHTSA has 1 owner complaints for the 2016 Sierra 2500HD in this area. Examples:
- NHTSA complaint ODI #11477738 (filed 08/05/2022): “As i was backing into my parking spot i heard a bag then the engine light came on, after that it wasn’t shifting correctly, had it checked out and was told the transmission has to be replaced the mechanic said that this transmission is known to be defective it…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: replace transmission (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
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: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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