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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1576 (Entertainment System) >> Diagnostic Information and Procedures >> Speakers Inoperative - One or More >> All Speakers Inoperative >> With RPO UQA (Bose)

With RPO UQA (Bose)

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Low level audio signal circuit shorted. Test all low level audio signal circuits for a short to ground or short to voltage. Refer to CIRCUIT TESTING  and WIRING REPAIRS  in Wiring Systems.
  2. No low level audio output from the radio. Test for any AC voltage between the left front low level audio signal circuits at the amplifier harness connector, disconnected with the radio volume adjusted to 50%. If no AC voltage is present, replace the radio. Refer to RADIO REPLACEMENT   . 
  3. No audio output from the amplifier. Replace the amplifier. Refer to AMPLIFIER REPLACEMENT (BRAVADA, ENVOY, TRAILBLAZER)   or AMPLIFIER REPLACEMENT (ENVOY XL, TRAILBLAZER EXT)   . 
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