One problem related to automatic transmission has been reported for the 2018 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Sierra 2500 based on all problems reported for the 2018 Sierra 2500.
2018 GMC Sierra 2500. Consumer writes in regard to transmission cooler lines recall.
| Power Train problems | |
| Automatic Transmission problems |