Table 1 shows three common engine and engine cooling related problems of the 2015 GMC Sierra 3500. The number one most common problem is related to the engine and engine cooling (two problems). The second most common problem is related to the engine exhaust system (two problems).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems | |
| Engine Exhaust System problems | |
| Engine Knocking Noise problems |
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. Read details...
The contact owns a 2015 GMC Sierra 3500. While driving, the service exhaust warning error indicator illuminated. In addition, the service trailer brakes error message illuminated, which caused the brakes to fail on the trailer. Read details...
Tl- the contact owns a 2015 GMC Sierra 3500. The contact stated that while driving approximately 70 mph a knocking noise was present coming from the engine and heavy smoke was seen coming out of the exhaust. Read details...