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HOMESERVICE MANUALSPONTIAC1997GRAND PRIX GTP, 4D SEDANREPAIR AND DIAGNOSISBRAKESANTI-LOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM - ABS-VIREMOVAL & INSTALLATIONABS/TCS MODULATOR GEARSREMOVAL
1997 Pontiac Grand Prix GTP, 4D Sedan

Abs/TCS Modulator Gears: Removal

1997 Pontiac Grand Prix GTP, 4D SedanSECTION Removal
  1. Remove modulator/motor pack assembly from vehicle. See ABS MODULATOR/MOTOR PACK ASSEMBLY  or TCS MODULATOR/MOTOR PACK ASSEMBLY. Turn modulator/motor pack assembly upside-down. Remove 6 Torx head screws attaching gear cover to bottom of modulator. See Figure.
  2. Remove 4 screws attaching motor pack to modulator. See Figure. DO NOT drop motor pack. If motor pack is dropped, replacement i s necessary. DO NOT allow gears to turn during removal of gear retaining nuts. Piston in modulator can hit top of bore, damaging piston.
  3. Insert a drift through holes in gears (not between gear teeth) to recessed hole in modulator base. See Fig 1. Remove gear retaining nuts as necessary. Identify gear position and location for reassembly reference. Remove gears from modulator.
Fig 1: Removing & Installing ABS/TCS Modulator Gears
G92I22259Courtesy 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:

  • • 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.