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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 543 (Disc Brakes) >> Removal & Installation >> Power Brake Booster >> Removal (3.8L)

Removal (3.8L)

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable.
  2. Remove the left instrument panel insulator.
  3. Remove the retaining clip and disconnect the brake booster pushrod from the brake pedal.
  4. Remove the fuel injector sight shield.
  5. Disconnect the brake fluid level sensor electrical connector from the brake fluid level sensor.
    6. NOTE: It is not necessary to disconnect the brake pipes from the master cylinder to the BPMV.
  6. Remove the 2 master cylinder retaining nuts and position the master cylinder aside.
  7. Disconnect the vacuum brake booster check valve from the brake booster. Position aside the vacuum hose and the check valve as an assembly.
  8. Disconnect the throttle and cruise control cables from the throttle body.
  9. Remove the throttle bracket, throttle cable, and the cruise control cable from the throttle body as an assembly. Position the throttle bracket and cables aside.
  10. Rotate the engine forward for service access. See ROTATING THE ENGINE FOR SERVICE ACCESS  under SERVICING.
  11. Remove the EGR valve wiring harness heat shield. Remove the EGR valve. See EGR VALVE under EMISSIONS SYSTEMS & SUBSYSTEMS in appropriate REMOVAL & INSTALLATION article in ENGINE PERFORMANCE.
  12. Remove the transmission fluid filler tube bracket retainer and position the filler tube aside.
  13. Remove the brake pressure modulator valve. See REMOVAL & INSTALLATION in appropriate ANTI-LOCK article.
  14. Attach the Power Brake Booster Holder to the booster using the master cylinder retaining nuts.
  15. Unlock the booster from the front of the cowl. Use a flat bladed tool to depress the brake booster locking tab out of the cowl mounting flange, while turning the booster counterclockwise with a ratchet on the Power Brake Booster Holder.
  16. Remove the vacuum brake booster.
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