Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| PTLAN + 2 circuits at PIM |
U0074* | U189A* | U0074* | - |
| PTLAN - 2 circuits at PIM |
U0074* | U189A* | U0074* | - |
| Wake Up Signal circuit 968 |
B137A* in SDGM | U189A* ** | 1 | - |
| Wake Up Signal circuit 932 |
B137B* | U182A* | U189A* | - |
| Wake Up Signal Circuit 5985 |
U1814* in BCM | U1812* in HPCM | U209A* in SDGM | - |
| * Other modules/DTCs will set with this fault. ** Open at SDGM or BECM will set DTC U1812 in HPCM. Open at PIM will set DTC U189A in the HPCM. 1. Parasitic drain on battery, and may set DTC U1875, U1876, U1878, U1879 as history in the HPCM with the key ON, or as current with the key OFF. |
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