Avalanche 1500 2WD V8-5.3L (2008)
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If the test lamp does not illuminate, test the appropriate circuit for an open/high resistance. If the circuit tests normal, replace the CCSM.
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If the test lamp is always ON, test the appropriate circuit for a short to voltage. If the circuit tests normal, replace the CCSM.
18. If all circuits test normal, test or replace the appropriate heat/cool seat ventilation blower.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests and Procedures
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Driver and Passenger Seat Back Ventilation Heating and Cooling Blower Replacement (Cadillac)
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Driver and Passenger Seat Cushion Ventilation Heating and Cooling Blower Replacement (Cadillac)
