Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 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 |
|---|---|---|---|---|
| Ignition Voltage (Circuit 2139) | P2534* ** | P2534** | U209A** or B1453 | - |
| Ignition Voltage (Circuit 239) | B1453* ** | B1453** | U209A** or B1453 | - |
| Communication Enable Signal (Circuit 5986) | U209A** or U2099 | U209A** | - | - |
| Wake Up Signal (Circuit 5985) | U1814* | U1812* | U209A* | - |
| * Circuit fuse will open ** May set other module/DTCs. |
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