Reference Information: Notes
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Entertainment/Communication Connector End Views
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
Scan Tool Reference
IMPORTANT:
Perform the Audio System Troubleshooting Hints to properly identify the customers concern before using this diagnostic.
- With the ignition OFF, disconnect the antenna cable from the radio. With a DMM, verify there is less than 0.20 ohm between the negative battery cable and the coaxial cable metal outer shield.
- If greater than 0.20 ohm, test the antenna mast base for proper ground to the body. If antenna is properly grounded replace the antenna coax cable.
- Disconnect the coax cable from the antenna mast. With a DMM, verify there is less than 3.5 ohms between the radio end coaxial cable conductor and the antenna end coaxial cable conductor.
- If greater than 3.5 ohms, replace the coax cable.
- If no problems are found with the coax cable or the grounding of the antenna mast replace the radio.