Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0100-U0299
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Low Speed GMLAN Serial Data | 1 | U0140-U0214 | 1 | - |
| Battery Positive Voltage Circuits | U0100-U0214 | U0100-U0214 | - | - |
| Ignition Voltage Circuits | U0100-U0214 | U0100-U0214 | - | - |
| Module Ground Circuits | - | U0100-U0214 | - | - |
| Accessory Wakeup Serial Data | U1814 | U0100, U0101 | - | - |
| Serial Data Communication Enable | U2099 | U0121 | - | - |
| 1. Scan Tool Does Not Communicate with Low Speed GMLAN Device | ||||