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The SOC at key-on is 30 percent lower than when the engine was last running. The battery drain is more than 2 amps. Action Taken When the DTC Sets No actions are taken. This DTC serves only as an aid to the technician. Conditions for Clearing the DTC The DTC will clear when the SOC is greater than or equal to 80 percent. A history DTC clears after 50 consecutive ignition cycles that the diagnostic runs and does Reference Information Schematic Reference Starting and Charging Schematics Auxiliary Battery Schematics (TP2) Connector End View Reference Component Connector End Views Description and Operation Charging System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Diagnostic Aids
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
This DTC indicates that the cause of a discharged battery is likely a parasitic current draw, If the vehicle is equipped with an auxiliary battery (TP2), verify that there is not a fuse Verify that all accessories are turned OFF, including optional accessories that the vehicle A battery discharging for no apparent reason while the vehicle is parked can be caused by Circuit/System Verification Ignition ON, compare the scan tool Prev. State of Charge and Start Up State of Charge Circuit/System Testing Go to Battery Electrical Drain/Parasitic Load Test. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. DTC C0899 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of this diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor DTC C0899 00
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Device Voltage Low - EBCM (JF3/JF7/JH6/JH7) DTC C0899 03 Device Voltage Low - EBCM (JL4), PTO (M1F) Diagnostic Fault Information Circuit/System Description The electronic brake control module (EBCM) and the power take off module (PTOM), if Conditions for Running the DTC The ignition is ON. Conditions for Setting the DTC The ignition voltage available to the EBCM or PTOM is less than 9 volts for 100 msec. Action Taken When the DTC Sets Eletronic Brake Control Module (EBCM) The traction control system (TCS) and vehicle stability enhancement system (VSES) are The vehicle dynamics caution (VDC) indicator turns ON. Power Take-Off Module (PTOM) The PTO (M1F) is disabled for the duration of the ignition cycle. Conditions for Clearing the DTC Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance B+ C0899 00, C0899 03 C0899 00, C0899 03 - - Ground - C0899 00, C0899 03 - -
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The condition for the DTC is no longer present. The EBCM automatically clears the history DTC when a current DTC is not detected in 100 Diagnostic Aids A low voltage DTC in multiple modules indicates a concern in the charging system. Inspect the ground connections G103 and G300 to insure that they are clean and tight. Reference Information Schematic Reference Starting and Charging Schematics Antilock Brake System Schematics Power Take-Off (PTO) Schematics Connector End View Reference Component Connector End Views Description and Operation Charging System Description and Operation ABS Description and Operation (With JL4) or ABS Description and Operation Power Take-Off (PTO) Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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