Parts Information
| Part | Manufacturer | OEM Part # | Price | Notes |
| 4HP22 & 4HP24 | ||||
| Switch EH-Gearbox | ||||
| Automatic Trans | CHK | 61311390632 | 88.10 | EH- Electronic-Hydraulic (Gear) |
| Canada | ||||
| To 09/89 | CHK | 61311378634 | 88.59 | EH- Electronic-Hydraulic (Gear) |
| From 09/89 | CHK | 61311390632 | 88.10 | EH- Electronic-Hydraulic (Gear) |
| 7-Switch Gearbox | ||||
| Automatic Trans | CHK | 25161219149 | 171.37 |