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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1948 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0100-U0299 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2009 Saturn Vue. 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 - -
Module 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