Table 1 shows two common power train related problems of the 2003 GMC C4500.
| Problem Category | Number of Problems |
|---|---|
| Clutch Bell Housing problems | |
| Differential Unit problems |
Throw bearing wears out every 40,000 km. Bell housing gone at 180,000 km's, rear end wore out at 182,000 kms and forth gear gone in transmission at 183,000, dash cluster gone at 188,000. Manufacture or dealer would not cover anything.
Vehicle was experiencing a problem with grease from the rear end leaking onto the left rear wheel braking system. This caused loss of braking in that wheel. Dealer replaced the grease seal with an upgraded seal six times, problem recurred. Real grease seal was replaced. The driver side brake caliper bolt fell out causing the caliper to rub the inside of the inner dual wheel causing damage to the caliper and wheel.