Two problems related to engine and engine cooling have been reported for the 2015 GMC Sierra 3500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 GMC Sierra 3500 based on all problems reported for the 2015 Sierra 3500.
The contact owns a 2015 GMC Sierra 3500. The contact stated while driving approximately 70 mph, the vehicle abruptly lost motive power and decelerated to 25 mph. The contact stated that the message “engine power reduced” was displayed. The contact stated that the failure was intermittent, but always occurred while driving at high speeds. The contact had taken the vehicle to a local dealer however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 48,815,.
Vehicle has a cp4 fuel pump. This pump has a high failure rate. Upon failure the vehicle shuts down and cannot be restarted. This can happen at any time and anywhere. Can happen while on a highway or freeway. This vehicle is used to haul heave loads. This failure can ending up to $10,000 or more to repair. This failure has not happened on this vehicle yet. Am very concerned about me safety and the safety of others because of the high failure rate.
| Engine And Engine Cooling problems | |
| Engine Exhaust System problems | |
| Engine Knocking Noise problems |