GM Bonneville/Eighty Eight/LeSabre 1986-1999

Electronic Brake Control Module (EBCM)

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REMOVAL & INSTALLATION



Vehicles with the Traction Control System (TCS) are equipped with an Electronic Brake and Traction Control Module (EBTCM).

1994-95 Vehicles

See Figure 1

  1. Make sure the ignition switch is in the OFF position. Disconnect the negative battery cable.
  2.  
  3. Detach the EBCM (or EBTCM) electrical connector by rotating the locking clip forward.
  4.  
  5. Unfasten the module retaining nuts.
  6.  
  7. Remove the EBCM/EBTCM by sliding it up and away from the strut tower.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: The EBCM/EBTCM is mounted to the left strut tower on 1994-95 vehicles

To install:
  1. Position the EBCM/EBTCM into the lower locating slot, then slide it downward.
  2.  
  3. Install the retaining nuts and tighten to 96 inch lbs. (11 Nm).
  4.  
  5. Attach the EBCM/EBTCM electrical connector.
  6.  
  7. Connect the negative battery cable.
  8.  

1996-99 Vehicles

See Figure 2

  1. Make sure the ignition switch is in the OFF position, then disconnect the negative battery cable.
  2.  
  3. Remove the air cleaner assembly and the Powertrain Control Module (PCM) cover.
  4.  
  5. Detach the EBCM/EBTCM electrical connector and motor ground cable connector.
  6.  
  7. Remove the EBCM/EBTCM bracket from the vehicle.
  8.  

On 1996-99 vehicles, the PMV is referred to as the Brake Pressure Modulator Valve (BPMV), and is attached to the EBCM/EBTCM.

  1. Unfasten the 4 EBCM/EBTCM-to-Brake Pressure Modulator Valve (BPMV) bolts.
  2.  
  3. Remove the EBCM/EBTCM by pulling it rearward, until the internal connector disengages. Do NOT twist the unit.
  4.  


WARNING
Do NOT pry the EBCM/EBTCM. Be careful not to damage the seal, if reusing the module. If the seal gets damaged during removal, repair with a suitable silicone sealer or replace the module.

Click image to see an enlarged view

Fig. Fig. 2: On 1996-99 vehicles, the EBCM/EBTCM mounts to the BPMV


To install:
  1. Clean the EBCM/EBTCM seal and BPMV gasket with alcohol. Position the EBCM/EBTCM to the BPMV and install the 4 retaining bolts. Tighten the bolts to 40 inch lbs. (4.5 Nm).
  2.  
  3. Install the EBCM/EBTCM bracket and tighten the center bracket mounting bolt to 10 ft. lbs. (14 Nm).
  4.  
  5. Attach the EBCM/EBTCM harness connector and the motor ground cable connector. Make sure the lock tab is securely fastened.
  6.  
  7. Install the PCM cover and air cleaner assembly.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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