Volt

Hand brake Cable Adjuster Disabling

The hand brake cable tension is controlled by the electronic hand brake (EHB) module. Tension can be fully released from the hand brake cables to allow for service of the hand brake system. Perform one of the following three methods to fully release cable tension.

With Scan Tool - Preferred Method

1. Block the drive wheels.
2. Install a scan tool to the vehicle.
3. Turn the ignition switch to the ON/RUN position with the engine OFF.
4. Using the scan tool, perform the following:

4.1.	From the scan tool menu, select Diagnostics

4.2.	Enter the appropriate vehicle information

4.3.	Select Chassis

4.4.	Select Hand brake Control Module

4.5.	Select Special Functions

4.6.	Select Cable Replacement

5. Follow the instructions on the scan tool to fully release the tension on the hand brake cables.

Without Scan Tool - Optional Method

1. Block the drive wheels.
2. Turn the ignition switch to the ON/RUN position with the engine OFF.
3. Place the automatic transmission in PARK or manual gearbox in NEUTRAL, as equipped.
4. Apply and hold the brake pedal. The brake pedal must remain applied throughout the hand brake cable tension release process.
5. Press and hold down the electronic hand brake (EHB) switch approximately 5 seconds.
6. Observe the HAND BRAKE lamp on the instrument cluster.
7. When the HAND BRAKE lamp flashes, release then immediately press and release the EHB switch.

The hand brake cable tension is fully released.

8. Release the brake pedal.

In the event the above methods to release the hand brake cable tension are unsuccessful, the following procedure may be necessary to release the hand brake cable tension.

Danger: Do not use a service jack in locations other than those specified to lift this vehicle. Lifting the vehicle with a jack in those other locations could cause the vehicle to slip off the jack and roll; this could cause injury or death.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the tyre and wheel assembly. Refer to Tyre and Wheel Removal and Installation .
3. Remove the left rear wheelhouse panel liner. Refer to Rear Wheelhouse Panel Liner Replacement .




Note: The protective plug for the manual release is located near the electrical connector.

4. Remove the protective plug (1) from the EHB manual release.
5. Using an appropriate square-drive tool, rotate the mechanism clockwise until the tension is fully released from the hand brake cables.

Up to 50 cycles may be required until the hand brake cable tension is fully released.

6. Install the protective plug to the EHB module.