GMC TSB #GCUS-3-902
2017 GMC Sierra
Affected Component: POWER TRAIN
- Summary
- 17108 01 - Service Update (revised parts list). Certain vehicles may have a fracture in the parking lever support window which, if overloaded, may result in a further fracture of the transmission case. This may cause the park system to be inoperative. Dealers will inspect transmission case for mold number and Julian date and replace suspect transmission.