Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| 231 | ||||
| Extension Housing | ||||
| Without Extended Cab | GMO | 15665311 | 168.00 | |
| With Extended Cab | GMO | 15665311 | 168.00 | |
| Rear Case | GMO | 12544079 | 174.33 | |
| Front Case | GMO | 12382636 | 344.05 | Contact Dealer for most current part and price information. |
| 233 | ||||
| Extension Housing | ||||
| Without Extended Cab | GMO | 15665311 | 168.00 | |
| With Extended Cab | GMO | 15665311 | 168.00 | |
| Rear Case | GMO | 12544079 | 174.33 | |
| Front Case | GMO | 12383601 | 587.50 | |
| 4472 | ||||
| Front Case | GMO | 12384751 | 282.11 | |
| Rear Case | GMO | 15634041 | 574.30 | |
| Extension Housing | GMO | 15662463 | 241.91 |