Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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 |
|---|---|---|---|
| IA Heater Temperature Signal | - | P154D | P154D |
| IA Heater Command 2 | P154B | P154B | P154B |
| IA Heater Voltage Signal | P154B | P154B | P154B |
| IA Heater Command 1 | P154B | P154B | P0640 |
| IA Heater Current Signal | P154C | P154C | P154C |
| IA Heater Feedback Signal | P154A | P154A | P154A |
| IA Heater Battery Positive Voltage | P154B | P154B | - |