Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the seat adjuster switch.
- Verify the scan tool seat switch parameters listed below are Inactive.
- Front Vertical Upward Switch
- Front Vertical Downward Switch
- Rear Vertical Upward Switch
- Rear Vertical Downward Switch
- Horizontal Forward Switch
- Horizontal Rearward Switch
- Recline Forward Switch
- Recline Rearward Switch
- If not the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM.
- Front vertical upward switch terminal A
- Front vertical downward switch terminal K
- Rear vertical upward switch terminal F
- Rear vertical downward switch terminal J
- Horizontal forward switch terminal D
- Horizontal rearward switch terminal C
- Recline forward switch terminal H
- Recline rearward switch terminal G
- If all circuits test normal, test or replace the seat adjuster switch.