| Model | Year | Condition | Remarks |
| silverado | 2005 | Unknown | Runs good, 240k has evap leak code |
| Sierra | 2017 | Unknown | P0420 and p0430 |
| Caprice | 2011 | Unknown | None |
| silverado | 2002 | misfire | 2500HD 200k miles rear main leaking, slight misfire at idle on most cylinders but no codes |
| silverado | 2005 | Known good | 2500 4wd 200k miles |