GM Corvette 1984-1996 Repair Guide

Control Module

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REMOVAL & INSTALLATION



1986-91 Vehicles

See Figures 1 and 2

On 1990-91 models, the control module is referred to as the Electronic Brake Control Module (EBCM). On 199 vehicles, the control module is referred to as the Electronic Brake and Traction Control Module (EBTCM).

  1. Disconnect the negative battery cable.
  2.  


WARNING
To prevent equipment damage, never connect or disconnect the electrical connector from the control module with the ignition switch in the ON position.

  1. From the passenger's compartment, remove the storage tray and insulation, located behind the driver's seat.
  2.  
  3. Detach the electrical connector from the control module connector, by depressing the spring clip located under the neck of the connector.
  4.  
  5. Remove the module relay from the brackets.
  6.  
  7. Unfasten the bolts attaching the control module to the brackets, then remove the control module from the vehicle.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the control module mounting-1986-89 vehicles

To install:

You must install the control module properly so that the wiring harness connector comes in from the proper side.

  1. Position the control module in the brackets, and secure with the retaining bolts. Tighten the bolts to 22 inch lbs. (2.5 Nm).
  2.  
  3. Install the module relay to the bracket.
  4.  
  5. Attach the electrical connector to the control module connector. Make sure the connection is tight and fully seated.
  6.  
  7. Install the insulation and storage tray.
  8.  
  9. Connect the negative battery cable, the perform the ABS system check, as outlined on the accompanying chart.
  10.  

1992-96 Vehicles
  1. Disconnect the negative battery cable.
  2.  
  3. On coupes, open the left rear storage compartment cover.
  4.  
  5. On convertibles, remove the storage compartment frame and covers.
  6.  
  7. Remove the sound insulator pad.
  8.  

On 1993-96 vehicles, the name was changed to Electronic Brake and Traction Control Module (EBTCM).

  1. Detach the wiring harness connector from the EBCM by pulling the retaining clip up to release front of the connector, then slide the connector towards the front of the vehicle.
  2.  
  3. For 1992-94 vehicles and 1995 VIN J engines, perform the following:
    1. Remove the retaining nut, then remove the EBCM from the vehicle.
    2.  

  4.  
  5. For 1995 VIN P and 1996 engines, perform the following:
    1. Remove the EBTCM bracket bolts.
    2.  
    3. Slide the brake and insulator off the EBTCM
    4.  
    5. Remove the EBTCM. If replacing the module, transfer the bracket to the new module.
    6.  

  6.  



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the EBCM on 1992-94 vehicles shown

To install:
  1. For 1995 VIN P and 1996 engines, perform the following:
    1. Install the EBTCM and bracket.
    2.  
    3. Install the EBTCM-to-BPM mounting bolts and EBTCM insulator mounting bolts.
    4.  
    5. Tighten the EBTCM-to-BPM bolts to 18 inch lbs. (2 Nm), the insulator mounting bolt to 11 ft. lbs. (15 Nm), the EBTCM bracket-to-underbody bolts to 89 inch lbs. (10 Nm) and the insulator retaining nut to 8 ft. lbs. (11 Nm).
    6.  

  2.  
  3. For 1992-94 vehicles and 1995 VIN J engines, position the EBCM and secure with the retaining nut. Tighten the nut to 8 ft. lbs. (11 Nm).
  4.  

  1. Attach the wiring harness connector, making sure the retaining clip locks and the connector is fully seated.
  2.  

Always be sure the sound insulator pad covers the whole modulator or excessive noise could result during system operation.

  1. Install the sound insulator pad.
  2.  
  3. Install the left storage compartment cover on the coupes or the storage compartment frame and covers on convertibles.
  4.  
  5. Connect the negative battery cable.
  6.  

 
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