Callout
| Component Name
|
|
Caution: Refer to Brake Fluid Irritant Caution in the Preface section.
Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.
Notice: When adding fluid to the brake master cylinder reservoir,
use only GM approved or equivalent DOT-3 brake fluid from a clean, sealed brake fluid
container. The use of any type of fluid other than the recommended type of brake
fluid may cause contamination which could result in damage to the internal
rubber seals and/or rubber linings of hydraulic brake system components.
Preliminary Procedures
- Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
.
- Without disconnecting the wiring harness connectors, reposition the electrical center and the powertrain control modules from the electrical center bracket and remove the bracket from the vehicle. Refer to
Underhood Electrical Center or Junction Block Bracket Replacement
.
- Remove the brake fluid from the master cylinder reservoir. Discard the fluid into an approved container.
- Disconnect the electrical connector from the brake fluid level sensor.
|
1
| Master Cylinder Reservoir Clutch Hose Quick-Connect Fitting (if equipped)
Tip
| • | Disconnect the quick-connect on the reservoir clutch hose from the clutch master cylinder. |
| • | Plug the reservoir clutch hose end to prevent fluid loss and contamination. |
| • | Cap the nipple on the clutch master cylinder to prevent fluid loss and contamination. |
|
2
| Master Cylinder Mounting Nut (Qty: 2)
Notice: Refer to Fastener Notice in the Preface section.
Tip
| • | Without disconnecting the brake pipes from the master cylinder, reposition the master cylinder away from the vacuum brake booster for master cylinder reservoir removal clearance. |
| • | Inspect the master cylinder to vacuum booster seal. Replace the seal if it is damaged. |
| • | Ensure the master cylinder to vacuum booster seal is properly seated in the groove on the master cylinder body before installing the master cylinder assembly to the vacuum booster. |
Tighten
22 N·m (16 lb ft) |
3
| Brake Master Cylinder
|
4
| Master Cylinder Reservoir Retaining Bolt
Tighten
6 N·m (53 lb in) |
5
| Master Cylinder Reservoir
Tip
| • | Maintain the master cylinder in the same plane as it is in the installed position during removal and installation of the master cylinder reservoir. |
| • | Remove the master cylinder reservoir by pulling straight up on the reservoir. |
| • | Inspect the reservoir cap and diaphragm for damage. Replace the assembly if necessary. |
| • | After the reservoir is secured to the master cylinder, fill the reservoir to the maximum-full level with GM or equivalent DOT 3 motor vehicle brake fluid from a clean, sealed container. |
|
6
| Brake Master Cylinder Reservoir Seal (Qty: 2)
Tip
Lubricate the NEW seals and the reservoir bayonets with GM or equivalent DOT 3 motor vehicle brake fluid from a clean, sealed container. |
