chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 7034 > < Diagram Information and Instructions|Page 7031
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Air Door Actuator / Motor: Initial Inspection and Diagnostic Overview

System Diagnosis

HVAC: Air Delivery And Temperature Control System Check

System Check

Symptom Table

Symptom Table                    
                                    
 

Perform the System Check and refer to the Symptom Table for the appropriate diagnostic procedures.

Troubleshooting Hints

1. Check for vacuum to the Solenoid Box.
2. Check HVAC Fuse and CLUST Fuse.
3. Move the Temperature Lever to full "COLD" and then full "HOT." Listen for the sound of the Servo Motor moving the valve through its full

range.

^

Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage
check.

^

Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.

Initial Inspection and Diagnostic Overview|Page 7034 > < Diagram Information and Instructions|Page 7031