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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1343 (Power Seat System) >> Diagnostic Information and Procedures >> Lumbar Support Inoperative (With Memory A45) >> Diagnostic Fault Information

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