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 |
|---|---|---|---|---|
| Battery Voltage - Relay Switch Side | 1 | 3 | - | - |
| Fuel Pump Supply Voltage | 1 | 3 | 2 | - |
| Fuel Pump Relay Control | P2632 | P2632 | P2632 | - |
| Fuel Pump Relay Ground | - | P2632 | - | - |
| Fuel Pump Ground | - | 3 | - | - |
| 1
Open fuel pump fuse 2 Fuel pump operates continuously, then discharged battery 3 Fuel pump operates will not operate |
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