Component Testing
WARNING: This page is about a different car, the 2020 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the S126 Drive Mode Select Switch.
- Test for infinite resistance between the signal terminal 1 and the ground terminal 6 with the switch in the open position.
- If less than infinite resistance
Replace the S126 Drive Mode Select Switch.
- Go to next step: If infinite resistance
- If less than infinite resistance
- Test for less than 2 Ω between the signal circuit terminal 1 and the ground terminal 6 with the switch in the closed position.
- If 2 Ω or greater
Replace the S126 Drive Mode Select Switch.
- Go to next step: If less than 2 Ω
- If 2 Ω or greater
- All OK.