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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 735 (ENTERTAINMENT SYSTEM)REPAIR INSTRUCTIONSANTENNA MAST CLEANING
1999 GMC Forward Control 5.7 R, Automatic

Antenna Mast Cleaning

1999 GMC Forward Control 5.7 R, AutomaticSECTION Antenna Mast Cleaning
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition to the ACC or ON position.
  2. Turn the radio ON to raise the power antenna to full extension.
    Fig 1: Antenna Mast Cleaning
    GM280586Courtesy of GENERAL MOTORS CORP.
  3. Dampen a clean cloth with mineral spirits.
    4. IMPORTANT: When wiping the antenna clean, pay particular attention to removing any dirt from the antenna section joints.
  4. Wipe the cloth up and down over the antenna sections, in order to remove any dirt.
  5. Using a clean, dry cloth, wipe off the antenna to remove any loosened dirt and or moisture.
  6. Turn the radio OFF to fully lower the power antenna.
  7. Repeat steps 2 through 6 until the antenna is clean.
  8. Turn the ignition OFF.
RENDER: 1.0x

NO RELATED

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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.