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Scan Tool Reference Control Module References for scan tool information Circuit/System Verification 1. Verify that the GBCM is installed correctly. The GBCM should be installed on the negative battery cables, with the sensor coil around the negative cables and facing away from the If the GBCM is installed backwards or incorrectly, remove and reinstall the GBCM. 2. Ignition ON, clear the DTC using the scan tool and start the engine. Verify that DTC B1566 does not set as current. If the DTC sets, replace the GBCM. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for GBCM replacement, setup, and programming DTC C0899 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor DTC C0899 Device Voltage Low - EBCM Diagnostic Fault Information Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance VSES/ABS Ignition 1 C0899 C0899 - - Ground - C0899 - -
2008 Hummer H3 2008 ENGINE Engine Electrical - H3
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