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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
High Speed GMLAN Serial Data Wake Up U2099, U0100-U02991 U0100-U0299 U0100-U02992 -
1 Vehicle will not start.
2 History only. If cleared the DTC will return after several ignition cycles.
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