One problem related to diesel engine has been reported for the 2015 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 2500 based on all problems reported for the 2015 Sierra 2500.
Duramax diesel engine fuel injection pump broke with no notice while driving causing a total loss of power. Failure repair under warranty required replacement of pump, injectors, lines, filters and flush of fuel tank.
| Engine And Engine Cooling problems | |
| Diesel Engine problems |