LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1408 (Entertainment System) >> Diagnostic Information and Procedures >> Speakers Inoperative - One or More >> All Speakers Inoperative

All Speakers Inoperative

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. 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 that 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.

With RPO UM8 (navigation)

  1. Speaker output shorted - Test all speaker outputs for a short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  2. Defective radio - Replace the radio. Refer to Radio Replacement .

Without RPO UM8

  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. IMPORTANT: Reprogram the radio. Refer toService Programming System (SPS) .
  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) Amplifier Replacement (Envoy XL, TrailBlazer EXT) Amplifier Replacement (Envoy XUV) .
IMPORTANT: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

With RPO U2K

  1. Remote radio audio signal circuit shorted - Test the remote radio audio signal circuits for a short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  2. No audio output from the digital radio receiver - Replace the digital radio receiver. Refer to Receiver Replacement - Digital Radio .
  3. No digital radio audio output from the radio - Replace the radio. Refer to Radio Replacement .
scientia non olet · About LEMON Manuals