CAUTION: Refer to Brake Fluid Irritant Caution

1. Remove the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (LHD) or Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (RHD).

2. Install the CH-47830 to the master cylinder assembly. See Special Tools.

3. Position the CH-47830 with the master cylinder assembly in a vise. See Special Tools.

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 40: Identifying Master Cylinder Reservoir Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

4. Remove the master cylinder reservoir (3). Refer to Master Cylinder Reservoir Replacement.

5. Remove the power brake booster (6). Refer to Power Brake Booster Replacement.

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 41: View Of Brake Pressure Modulator Valve & Bolts Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

6. Remove the mounting bolts for the brake pressure modulator valve (BPMV) (1).

7. Remove the mounting bolt (6) for the fluid level sensor.

8. Remove the bracket (5) for the fluid level sensor wiring harness.

IMPORTANT: When removing the BPMV from the brake master cylinder,

ensure the locating pin remains in the brake master cylinder body.

2007 BRAKES Antilock Brake System - H3

9. Remove the BPMV and module assembly (2) from the brake master cylinder.

IMPORTANT: DO NOT re-use the BPMV gasket.

10. Remove and discard the gasket (3) from the brake master cylinder.

Installation Procedure

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 42: View Of Brake Pressure Modulator Valve & Bolts Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

IMPORTANT: Ensure the locating pins remain in the master cylinder body.

2. Install the BPMV and module assembly (2) to the brake master cylinder.

NOTE: Refer to Fastener Notice.

IMPORTANT: Hand install all of the BPMV and module assembly bolts to properly locate the BPMV and module assembly before tightening the bolts.

3. Install the bolts (1) for the BPMV and module assembly.

Tighten: Tighten the bolts to 32 N. m (24 lb ft).

4. Install the bracket (5) for the fluid level sensor electrical harness.

5. Install the mounting bracket bolt (6).

Tighten: Tighten the bolt to 8 N. m (71 lb in)

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 43: Identifying Master Cylinder Reservoir Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

6. Install the power brake booster (6). Refer to Power Brake Booster Replacement.

7. Install the master cylinder reservoir (3). Refer to Master Cylinder Reservoir Replacement.

8. Remove the brake master cylinder assembly from CH-47830 . See Special Tools.

2007 BRAKES Antilock Brake System - H3

9. Install the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (LHD) or Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (RHD).

10. Bleed the hydraulic system. Refer to Hydraulic Brake System Bleeding (Manual) or Hydraulic Brake System Bleeding (Pressure) .

11. Refer to Control Module References for programming and setup information.

FRONT WHEEL SPEED SENSOR REPLACEMENT

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 44: Replacing Front Wheel Speed Sensor Courtesy of GENERAL MOTORS CORP.

Front Wheel Speed Sensor Replacement

Callout I Component Name____________________

Preliminary Procedures

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.

3. Remove the front disc brake rotor. Refer to Front Brake Rotor Replacement.

2007 BRAKES Antilock Brake System - H3

1

Wheel Speed Sensor Electrical Connector Procedure:

Disconnect the electrical connector and release the clip from the vehicle body.

2

Wheel Speed Sensor Wiring Harness Retaining Clip

3

Wheel Speed Sensor Harness Clip Bolt (if equipped)

NOTE:

Refer to Fastener Notice.

Tip: If equipped with a wheel speed sensor wire harness clip, release the clip from the upper control arm.

Tighten: 9 N. m (80 lb in)

4

Wheel Speed Sensor Wiring Harness Retaining Clip

5

Wheel Speed Sensor Mounting Bolt Tighten: 18 N. m (13 lb ft)

6

Wheel Speed Sensor

REAR WHEEL SPEED SENSOR REPLACEMENT

Rear Wheel Speed Sensor Replacement

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 45: Wheel Speed Sensor Replacement - Rear Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

Callout

Component Name

NOTE:

Refer to Fastener Notice.

Fastener Tightening Specifications: Refer to Fastener Tightening

Specifications. Preliminary Procedure: Raise the vehicle. Refer to Lifting and Jacking

the Vehicle.

1

Connector, ABS Electrical

2

Clip, ABS Wiring Harness Frame Retaining

3

Clip, ABS Wiring Harness Axle Housing Retaining

4

Bolt, Wheel Speed Sensor Mounting (Qty: 2)

Tighten: 18 N. m (13 lb ft)

5

Sensor, Wheel Speed

REAR WHEEL SPEED SENSOR RING REPLACEMENT Tools Required

• J 8092 Driver Handle

• J 21128 Axle Pinion Oil Seal Installer

• J 23690 Bearing Installer

• J 2619-01 Slide Hammer

• J 45857 Tone Wheel and/or Bearing Remover

• J 45860 Tone Ring Installer

Removal Procedure

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.

3. Remove the rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement.

4. Remove the rear axle housing cover. Refer to Rear Axle Housing Cover and Gasket Replacement.

5. Remove the axle shaft. Refer to Rear Axle Shaft Replacement.

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 46: The Wheel Speed Sensor Ring From The Axle Housing Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

6. Remove the axle shaft seal, the bearing and the wheel speed sensor ring from the axle housing using the J 45857 (1) and the J 2619-01 (2).

Installation Procedure

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 47: Installing Wheel Speed Sensor Ring Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

1. Install the wheel speed sensor ring using the J 45860 (1) and the J 8092 (2).

2. Drive the wheel speed sensor ring into the axle housing until the tool bottoms against the tube.

2007 BRAKES Antilock Brake System - H3

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 48: Installing The Axle Shaft Bearing Courtesy of GENERAL MOTORS CORP.

3. Install the axle shaft bearing using the J 23690 (1) and the J 8092 (2).

4. Drive the axle shaft bearing into the axle housing until the tool bottoms against the tube.

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 49: Installing Axle Shaft Seal Courtesy of GENERAL MOTORS CORP.

2007 BRAKES Antilock Brake System - H3

5. Install the axle shaft seal using the J 21128 .

6. Drive the tool into the bore until the axle shaft seal bottoms flush with the tube.

7. Install the axle shaft. Refer to Rear Axle Shaft Replacement.

8. Install the rear axle housing cover. Refer to Rear Axle Housing Cover and Gasket Replacement.

9. Install the rear wheel speed sensor. Refer to Rear Wheel Speed Sensor Replacement.

10. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.

11. Fill the rear axle. Refer to Rear Axle Lubricant Replacement.

2007 BRAKES Antilock Brake System - H3

12. Lower the vehicle.

VEHICLE YAW SENSOR WITH VEHICLE LATERAL AND LONGITUDINAL ACCEL ACCELEROMETER REPLACEMENT

1 2

CAUTION: Refer to Brake Fluid Irritant Caution

Fig. 50: Yaw Rate Sensor/Lateral and Longitudinal Accelerometer Replacement Courtesy of GENERAL MOTORS CORP.

Vehicle Yaw Sensor with Vehicle Lateral and Longitudinal Accelerometer Replacement

Callout

Component Name

NOTE:

Refer to Fastener

Fastener Tighte Specifications!

Notice.

rning Specifications: Refer to Fastener Tightening *reliminary Procedure: Remove the front carpet enough to access the Refer to Front Floor Panel Carpet Replacement.

yaw rate sensor.

1

Nut, Longitudinal Accelerometer (Qty: 2) Tighten: 9 N. m (80 lb in)

2

Sensor, Longitudinal Accelerometer Tip: Remove the electrical connector.

2007 BRAKES Antilock Brake System - H3

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