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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1559 (Antilock Brake System And TCS) >> Repair Instructions >> Brake Modulator Assembly Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: When installing a new brake modulator assembly, do NOT remove the shipping plugs from the pipe ports until after installation into the vehicle.
  1. Install the brake modulator assembly to the modulator bracket.
    2. Fig 1: Removing/Installing Brake Modulator Assembly To The Bracket
    GM927841Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  2. Tighten the 2 brake pressure modulator assembly insulator nuts.

    Tighten:  Tighten the nuts to 20 N.m (15 lb ft).

    3. Fig 2: Removing/Installing Plugs From Master Cylinder Ports On The Modulator Assembly
    GM927833Courtesy of GENERAL MOTORS CORP.
  3. Remove the caps from the master cylinder brake pipe ends.
  4. Remove the plugs from the master cylinder ports on the modulator assembly.
  5. Connect the master cylinder brake pipes to the modulator assembly, in the same location as removed.
  6. Tighten the brake pipe fittings at the BPMV.

    Tighten:  Tighten the fittings to 18 N.m (13 lb ft).

  7. Remove the caps from the caliper and wheel cylinder brake pipe ends.
  8. Remove the plugs from the caliper and wheel cylinder ports on the modulator assembly.
  9. Connect the caliper and wheel cylinder brake pipes to the modulator assembly, in the same location as removed.
  10. Tighten the brake pipe fittings at the BPMV.

    Tighten:  Tighten the fittings to 18 N.m (13 lb ft).

    11. Fig 3: Disconnecting/Connecting Electrical Connector From Electronic Brake Control Module (EBCM)
    GM927847Courtesy of GENERAL MOTORS CORP.
  11. Connect the electrical connector to the EBCM.
    12. Fig 4: View Of Transmission Control Module
    GM927845Courtesy of GENERAL MOTORS CORP.
  12. Reposition the TCM, if equipped, to the mounting bracket.
  13. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Pressure) or Hydraulic Brake System Bleeding (Manual) .
  14. Turn the ignition switch to the ON position. DO NOT start engine.
  15. Perform the Diagnostic System Check - Vehicle .
  16. Observe the feel of the brake pedal after performing the diagnostic system check. If the pedal now feels spongy, air may have been in the secondary circuit of the brake modulator assembly, which may have been introduced into the primary circuit. If the pedal feels spongy, perform the Antilock Brake System Automated Bleed Procedure .
  17. Remove the shop towel and discard into an approved container.
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