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Testing for Intermittent Conditions and Poor Connections . Symptom List Refer to a symptom diagnostic procedure from the following list in order to diagnose the Cooling Fan Always On Cooling Fan Inoperative Engine Overheating Loss of Coolant Thermostat Diagnosis Engine Fails To Reach Normal Operating Temperature LOW ENGINE COOLANT INDICATOR ALWAYS ON 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. Diagnostic Fault Information Circuit/System Description The low engine coolant level indicator is controlled by the HVAC control module. The normal Reference Information Schematic Reference Engine Cooling Schematics Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance Coolant Level Switch Signal Indicator OFF Indicator ON - - Ground - Indicator ON - -
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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