Suburban 1/2 Ton 2WD V8-5.3L VIN T (2004)
Check - Vehicle. The Diagnostic System Check will provide the following information:
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The identification of the control modules which command the system
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The ability of the control modules to communicate through the serial data circuit
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The identification of any stored diagnostic trouble codes (DTCs) and their status
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Visual/Physical Inspection
Perform the following visual inspections;
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Inspect for aftermarket devices which could affect the operation of the Radio/Audio System. Refer to Checking Aftermarket Accessories in SI.
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Inspect the easily accessible and visible system components for obvious damage or conditions which could cause the symptom.
Intermittent Conditions
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in
SI.
Symptom List
