| Part | Manufacturer | OEM Part # | Price | Notes |
| THM 400-475 (3L80-3L80HD) |
| Trans Gasket & Seal Kit | GMO | 8629954 | 138.42 | Contact Dealer for most current part and price information. |
| Trans Overhaul Kit | GMO | 24204440 | 299.62 | Contact Dealer for most current part and price information. |
| Trans Snap Ring Kit | GMO | 8623979 | 6.60 | Contact Dealer for most current part and price information. |
| THM 700-R4 (4L60-4L60E) |
| Gasket & Seal Kit | GMO | 24201804 | 158.99 | Contact Dealer for most current part and price information. |
| Overhaul Kit | GMO | 8649995 | 182.00 | |
| Snap Ring Kit | GMO | 8642910 | 15.69 | |