Lumbar Switch
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the lumbar switch.
- Test for infinite resistance between each seat direction signal terminal listed below and the B+ terminal G with the switch in the open position.
- Lumbar horizontal forward switch terminal C
- Lumbar horizontal rearward switch terminal B
- Lumbar vertical upward switch terminal F
- Lumbar vertical downward switch terminal A
- If not the specified value, replace the lumbar switch.
- Test for less than 1 ohm between each lumbar direction signal terminal listed below and the B+ terminal G with the switch in the closed position.
- Lumbar horizontal forward switch terminal C
- Lumbar horizontal rearward switch terminal B
- Lumbar vertical upward switch terminal F
- Lumbar vertical downward switch terminal A
- If greater than the specified range, replace the lumbar switch.