Only Front Speakers or Only Rear Speakers Inoperative (RPO WBM only)
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
The following information lists the most probable cause of the concern to the least probable cause, followed by the appropriate test for the condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems.
Audio output from amplifier to speaker shorted to ground or shorted to battery positive voltage.
Test the affected audio output circuits from the amplifier for a short to ground or a short to positive battery voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.