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 | 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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