LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2008 >> Optra LS, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Repair Instructions >> Brake Modulator Assembly Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

    NOTE: Refer to Fastener Notice .
    Fig 1: Identifying Brake Pressure Modulator Valve Mounting Bracket And Nuts
    GM1290105Courtesy of GENERAL MOTORS CORP.
  1. Insert the ABS brake pressure modulator valve into the mounting bracket and install the nuts.

    Tighten:  Tighten the nuts to 15 N.m (11 lb ft)  .

  2. Remove the screw plugs and install all of the hydraulic brake pipes.

    Tighten:  Tighten the brake pipe nuts to 22 N.m (16 lb ft)  .

  3. Connect the 31-pin wiring harness connector J1.
  4. Connect the negative battery cable.
  5. Bleed the hydraulic system. Refer to Hydraulic Brake System Bleeding (ABS) or Hydraulic Brake System Bleeding (Manual) .
  6. Refer to Control Module References for programming and setup information.