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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1109 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC C0899 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify DTC C0899 is set as current.
  2. Ignition OFF, measure the voltage at the battery terminals.
  3. Ignition ON, observe the scan tool EBCM Battery Positive Voltage parameter.
  4. Verify that battery terminal voltage and Battery Positive Voltage parameter readings do not differ by more than 2 volts.
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