Grid Filament Repair

1998 Buick RivieraSECTION Grid Filament Repair
  1. To repair grid, turn system off and disconnect negative battery cable. Gently clean area to be repaired with steel wool. Wipe area clean with denatured alcohol. Be sure to clean 1/4" (6 mm) beyond each side of break.
  2. With glass at room temperature of 70-90Β°F (20-32Β°C), position masking tape along both sides of grid line at damaged area. See Fig 1 . Apply grid repair material to grid and carefully remove masking tape. Holding heat gun 1-2" (25-50 mm) from repair area, apply heat at 500-700Β°F (260-370Β°C) for 2-3 minutes. If heat gun is not available, allow repair area to air dry for at least 24 hours.
  3. Test defogger operation to verify repair. If repair appears discolored, apply a coating of tincture of iodine. Allow iodine to dry for 30 seconds and carefully wipe off excess.
    Fig 1: Repairing Grid Line
    G92A01033Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

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

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