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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 475 (SUNROOF SYSTEM)REPAIR INSTRUCTIONSSUNROOF DRAIN HOSE REPLACEMENT - FRONTREMOVAL PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic

Removal Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal Procedure
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front door sill plate. Refer to DOOR SILL PLATE REPLACEMENT -- FRONT .
  2. Remove the headliner. Refer to HEADLINER REPLACEMENT (AZTEK) or HEADLINER REPLACEMENT (RENDEZVOUS) .
  3. Reposition the carpet in order to gain access to the access hole in the front door hinge pillar.
  4. Disconnect the front sunroof drain hose from the sunroof module front spigot.
  5. Tie a string to the module end of the front sunroof drain hose.
  6. Remove the front sunroof drain hose from the windshield pillar. Pull the hose from the front hinge pillar, allowing the string to remain in the pillar.
    Fig 1: Removing Front Sunroof Drain Hose
    G01516230Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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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.