ASI Resolution - Manual Push to Release Parking Brake Does Not Fully Release (Replace Both Rear Park Brake Cable Assemblies)

This bulletin is being revised to update the correction, parts and warranty information. Please discard Corporate Bulletin Number 04-05-26-001 (Section 05-Brakes).

Some customers may comment that the manual push-to-release parking brake does not fully disengage after releasing the park brake pedal.

This condition may be due to the rear park brake cable spring tension not being sufficient to overcome the friction of the park brake apply system.

Replacement of both the LH and RH rear park brake cable assemblies is required. An improved rear park brake cable assembly, P/N 10373648, is now available from GMSPO. Remove the existing LH and RH rear park brake cable assemblies and install a new cable on the LH side and a new cable on the RH side.

Refer to the replacement procedures in this bulletin.

Tools Required:

J 37043 Parking Brake Cable Release Tool

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Manual or SI Document #377101.



2. Pull down on the intermediate park brake cable (5) near the connector (4) in order to relieve cable tension.
3. At the connector, carefully lift up the rear tab (2) to disconnect the intermediate park brake cable (5) from the front park brake cable (3).
4. Remove the cable-to-LH rear control arm retaining bolt (1).



5. At the equalizer (6), carefully lift up the tab (7) to disconnect the LH rear park brake cable (8) from the parking brake cable system.



6. At the LH rear frame bracket (9), use J 37043 to compress the cable-to-bracket locking tabs (10) on the LH rear park brake cable.
7. Remove the cable from the LH rear frame bracket (9).
8. Push the cable back through the cable sleeve/sheath in order to relieve tension at the LH rear park brake actuator.



9. Remove the cable end from the actuator (11).
10. At the LH rear wheel park brake actuator support bracket, use J 37043 to compress the cable-to-bracket locking tabs (12) on the LH rear park brake cable.
11. Remove the LH rear park brake cable assembly from the vehicle.

Tools Required:

J 37043 Parking Brake Cable Release Tool

Important: Ensure the cable end is hooked over the park brake actuator arm BEFORE attaching the cable to the bracket.

1. Install a new LH rear park brake cable assembly, P/N 10373648, to the vehicle.



2. Hook the cable end over the LH rear park brake actuator arm.
3. Press the cable into the actuator support bracket. Ensure the locking tabs are properly seated.



4. Install the cable-to-LH rear control arm retaining bolt.

Tighten
Tighten the retaining bolt to 24 N·m (18 lb ft).




5. Install the LH park brake cable into the LH rear frame bracket (9). Ensure the locking tabs (10) are properly seated.



6. At the equalizer (6), connect the LH rear park brake cable (8) to the parking brake cable system. Carefully bend tab (7) down into position.
7. Go to Removal Procedure-RH Rear Park Brake Cable.

Tools Required:

J 37043 Parking Brake Cable Release Tool

1. Remove the cable-to-RH rear control arm retaining bolt.



2. At the connector (15), carefully lift up one tab in order to disconnect the RH rear park brake cable (14) from the intermediate park brake cable.
3. At the RH rear frame bracket (13), use J 37043 to compress the cable-to-bracket locking tabs on the RH rear park brake cable.
4. Remove the cable from the RH rear frame bracket.
5. Push the cable back through the cable sleeve/sheath in order to relieve tension at the RH rear park brake actuator.



6. Remove the cable end from the actuator (12).
7. At the RH rear wheel park brake actuator support bracket, use J 37043 to compress the cable-to-bracket locking tabs (11) on the RH rear park brake cable.
8. Remove the RH rear park cable assembly from the vehicle.

Tools Required:

J 37043 Parking Brake Cable Release Tool

Important: Ensure the cable end is hooked over the park brake actuator arm BEFORE attaching the cable to the bracket.

1. Install a new RH rear park brake cable assembly, P/N 10373648, to the vehicle.



2. Hook the cable end over the RH rear park brake actuator arm.
3. Press the cable into the actuator support bracket. Ensure the locking tabs are properly seated.



4. Install the cable-to-RH rear control arm retaining bolt.

Tighten
Tighten the retaining bolt to 24 N·m (18 lb ft).




5. Install the RH park brake cable (14) into the RH rear frame bracket (13). Ensure the locking tabs are properly seated.
6. At the connector (15), connect the RH rear park brake cable (14) to the intermediate park brake cable. Carefully bend tab down into position.
7. Connect the intermediate park brake cable to the front brake cable. Carefully bend the connector tab down into position.
8. The park brake cable system is self-adjusting. No cable adjustment is needed.
9. Lower vehicle.

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use: