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 | Signal Performance |
|---|---|---|---|---|
| Module B+ | U0100-U0299 | U0100-U0299 | - | - |
| Ignition | U0100-U0299 | U0100-U0299 | - | - |
| Module Ground | U0100-U0299 | U0100-U0299 | - | - |
| Accessory Wake Up Serial Data | U1814 | U0100-U0299 | - | - |
| High Speed GMLAN Serial Data Wake Up | U2099 | U0100-U0299 | - | - |
| High Speed GMLAN Serial Data (+) | 2 | U0100-U0299 | 2 | - |
| High Speed GMLAN Serial Data (-) | 2 | U0100-U0299 | 2 | - |
| Low Speed GMLAN Serial Data | 1 | U0100-U0299 | 1 | - |
| 1. Scan tool does not communicate with low speed GMLAN device 2. Scan tool does not communicate with high speed GMLAN device |
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