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HOMESERVICE MANUALSCADILLAC2009ESCALADE ESV AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 552 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPERSONAL AUDIO LINK MODULE MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2009 Cadillac Escalade ESV AWD

Circuit/System Verification

2009 Cadillac Escalade ESV AWDSECTION Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Verify that the iPod® is in good working order and visually inspect the iPod® connector cavity for any signs of damage before performing this diagnostic. Verify the most up to date software has been downloaded from http://www.apple.com/support/ipod/ to the iPod® before performing this diagnostic.

  1. Tune to a strong AM or FM station and verify each speaker is producing clear and even sound, with no distortion.
    • If any speaker is not producing sound or the sound produced is distorted, refer to Speaker Malfunction .
  2. Ignition ON, Observe the PAL red LED lamp. Verify the red LED lamp is illuminated.
    • If the PAL red LED is not illuminated, go to Circuit/System Testing.
  3. Set the radio to the iPod® interface menu and attempt to operate audio from the iPod®.
  4. Inspect the interface harness at the connection to the iPod® and verify that audio quality from the iPod® is not changed when the harness is bent in multiple directions.
    • If the audio changes quality or drops out, inspect the iPod® connector cavity or interface cable for damage. If no damage found, replace the iPod® interface cable.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.