One problem related to differential unit has been reported for the 1997 GMC C1500. The most recently reported issues are listed below.
While driving down the road my rear differential broke resulting in loss of vehicle control. Lost power steering control as well as braking ability. The left wheel ended up detaching three feet away from were the wheel is to be mounted to the truck.
| Transmission Failure problems | |
| Differential Unit problems | |
| Automatic Transmission problems |