Diagnostic Fault Information
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
DTC U2105-U2199
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Low Speed GMLAN Serial Data | 1 | U2105-U2199 | 1 | - |
| Battery Positive Voltage Circuits | U2105-U2199 | U2105-U2199 | - | - |
| Ignition Voltage Circuits | U2105-U2199 | U2105-U2199 | - | - |
| Module Ground Circuits | - | U2105-U2199 | - | - |
| Serial Data Communication Enable | U2099 | U2105-U2199 | - | - |
| 1. Scan Tool Does Not Communicate with Low Speed GMLAN Device | ||||