One problem related to clutch bell housing has been reported for the 2003 GMC C4500. The most recently reported issues are listed below.
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.
| Clutch Bell Housing problems | |
| Differential Unit problems |