Table 1 shows two common other fuel system related problems of the 2018 GMC Sierra 2500. The number one most common problem is related to the other fuel system (three problems). The second most common problem is related to the other fuel system fuel injection system (one problem).
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Fuel Injection System problems |
Gm duramax l5p diesel engine electrical connector for #4 fuel injector. This failure caused the diesel exhaust brake, which controls downhill speed, to disengage, extreme shaking of the vehicle, emissions system warning and speed limiting. Read details...
My husband was driving our brand new denali which has only 3500 miles on it. The engine completely shut down crossing a highway with 55 miles per hour posting and my daugther of 8 years old was in the back seat. Read details...