2024 GMC Sierra 2500HD: Power Train complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 27 owner complaints for the 2024 GMC Sierra 2500HD that list the power train component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11764802 (filed 09/16/2026): “Driving down the road going to and intersection the dash says i received a service esc message followed by a reduced acceleration warning on the center display. i also had the forward collision, traction control and check engine lights come on. i also noticed the shudder/jerk. the truck is giving a…”
- NHTSA complaint ODI #11761815 (filed 09/03/2026): “While driving my truck on the highway at 65 mph the truck bucked hard and immediately downshifted into 2nd gear. this caused me to rapidly decelerate to approximately 40 mph, i am lucky there was not another vehicle behind me when this happened since rapid unexpected deceleration without brake light…”
- NHTSA complaint ODI #11759764 (filed 08/26/2026): “The control valve body failed. there are so many, that there was a shortage of parts. had to take it in as it went into limp mode. 34,000 miles. there were dozens of trucks, same year, waiting for the same repair. shop says probably every truck will need it. it is a known issue.…”
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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