Diagnostic Fault Information
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.
| Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
| B+ Lumbar Switch | 2 | 1 | 1 | - | - |
| Lumbar Down Switch Signal | 2 | 1 | 1 | - | - |
| Lumbar Up Switch Signal | 2 | 1 | 1 | - | - |
| Lumbar Forward Switch Signal | 2 | 1 | 1 | - | - |
| Lumbar Rearward Switch Signal | 2 | 1 | 1 | - | - |
| Driver Seat Lumbar Motor Forward Control | B3920 02 | B1335 00, B1335 0B | 1 | B3920 01 | B1335 42, B1335 4B, B1850 5A |
| Driver Seat Lumbar Motor Rearward Control | B3920 02 | B1335 00, B1335 0B | 1 | B3920 01 | B1335 42, B1335 4B, B1850 5A |
| Driver Seat Lumbar Motor Down Control | B3920 02 | B1335 00, B1335 0B | 1 | B3920 01 | B1335 42, B1335 4B, B1860 5A |
| Driver Seat Lumbar Motor Up Control | B3920 02 | B1335 00, B1335 0B | 1 | B3920 01 | B1335 42, B1335 4B, B1860 5A |
| 1. Lumbar inoperative 2. Scan Tool Does Not Communicate with Low Speed GMLAN Device |
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