Diagnostic Fault Information
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.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Drive Motor Generator Battery Control Module B+ Voltage | U1888, U1878, U1875, U1862, U1821, U1812, U0129, *U0111 | U1888, U1878, U1875, *U0111 | - | - |
| Drive Motor Generator Battery Control Module Serial Data Communication Enable | U1888, U1878, U1875, *U209A | U1888, U1878, U1875, *U0111 | - | - |
| High Speed GMLAN Serial Data Bus + | **U1888 | U1888, U1878, U1875, U0129, *U0111 | **U1888 | - |
| High Speed GMLAN Serial Data Bus - | **U1888 | U1888, U1878, U1875, U0129, *U0121, *U0111 | **U1888 | - |
| Drive Motor Generator Battery Control Module Ground | - | U1888, U1878, U1875, *U0111 | - | - |
| HPCM Ignition (circuit 2139) | P2534 | P2534 | U1888, *B1453 | - |
| * Sets in the SDG module ** No scan tool communication with hard fault. Additionl DTCs are set |
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