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Home >> Chevrolet >> 1997 >> Lumina Base >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes & Drum Brakes >> Removal & Installation >> Master Cylinder >> Removal (With ABS)

Removal (With ABS)

  1. Using Tech 1 scan tool, perform Gear Tension Relief Sequence. See Tech 1 scan tool for instructions or more information.
    NOTE: Procedures were written specifically for use with GM Tech I or Tech II scan tools. Generic scan tools can be used but may have limited functions.
  2. Disconnect fluid level sensor electrical connector. Disconnect electrical connectors from both solenoids. Disconnect motor pack 3-pin and 6-pin connectors. Disconnect brakelines from ABS hydraulic modulator. Plug lines and openings in ABS hydraulic modulator. DO NOT allow any brake fluid to enter motor pack or electrical connectors. Remove nuts securing master cylinder to booster. Remove ABS hydraulic modulator/master cylinder assembly.
  3. Remove 2 Torx head screws securing gear cover to bottom of ABS hydraulic modulator. Remove gear cover. Remove 4 Torx head screws securing motor pack to ABS hydraulic modulator. Remove motor pack.
  4. Remove 2 banjo bolts securing ABS hydraulic modulator to master cylinder. Separate ABS hydraulic modulator from master cylinder. Remove 2 transfer tubes installed between ABS hydraulic modulator and master cylinder. Remove banjo bolt "O" rings from ABS hydraulic modulator and master cylinder.
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