Initial Inspection and Diagnostic Overview

1. Check RADIO and ELEC Fuses by visual inspection.
2. Check that the Antenna connector and the Antenna Coaxial Cable are properly connected.
3. Adjusting the Radio controls will change the operation of the sound system. Consult the Delco Sound Service Guide for information regarding the operation of these controls.
4. Before troubleshooting a suspect speaker, check all connections to that Speaker.
5. For proper noise diagnosis, take the car outside where signals are strong. Close the hood and keep away from metal buildings or sources of radio interference.
6. Ignition noise on FM may indicate a defective Ignition System.
7. Coated screws or bolts can cause a poor ground condition. Scrape ground screw clean of any paint or varnish.