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List Of Service 4 Wheel Drive Gmc Sierra 2025. Diagnosis may reveal that the atc fuse could be open, possible dtc c0308, or various u codes may. No check engine light, no code.
On my 2007 chev 2500 hd duramx with allison 6 spd, i have a service 4wd message. I looked at the rotary knob but it was in 2 wheel. I drove to my destination and just before i got there, the service 4 wheel drive message popped up then disappeared.
I looked at the rotary knob but it was in 2 wheel. I drove to my destination and just before i got there, the service 4 wheel drive message popped up then disappeared. Cranked my truck yesterday to run some errands, service 4 wheel drive system immediately displayed.
Had it diagnosed at the dealer saying i needed a transfer case actuator. Diagnosis may reveal that the atc fuse could be open, possible dtc c0308, or various u codes may. Indicator still showed 2wd but would.
