Removal Procedure
- Place the vehicle on a flat surface.
- Block the front wheels.
- Apply the parking brake.
- To
allow access for the removal of the vacuum brake booster, position the gearshift lever
into the lowest gear.
- Remove air cleaner assembly. Refer to
Air Cleaner Assembly Replacement
in Engine Controls - 4.6L.
- Remove the cruise control module and position it out of the way. Refer
to
Cruise Control Module Replacement
in Cruise
Control.
- Remove the accelerator control cable and position it out of the way. Refer
to
Accelerator Control Cable Replacement
in Engine Controls - 4.6L.
- Remove the accelerator control cable bracket and position it out of the
way. Refer to
Accelerator Control Cable Bracket Replacement
in Engine Controls - 4.6L.
- Disconnect the electrical connector (2) at the left strut tower. Refer
to
Master Electrical Component List
in
Wiring Systems.
- Remove the master cylinder mounting
nuts (3).
- Disconnect the master cylinder (1) from the brake booster (2).
- Move the master cylinder forward just enough to clear the studs on the
vacuum brake booster. This will flex the brake pipes slightly. Do not bend or
distort the pipes.
- Disconnect the shift control cable from the shaft lever pin and position
it out of the way. Refer to
Automatic Transmission Range Selector Cable Replacement - Console
in Automatic Transaxle -
4T80-E.
- Disconnect the vacuum check valve (2)
from the vacuum booster.
- Remove the inlet heater pipe. Refer to
Heater Inlet Pipe Replacement
in Heating, Ventilation and Air Conditioning.
- Remove the left closeout insulator panel. Refer to
Instrument Panel Insulator Panel Replacement - Left Side
in Instrument Panel, Gages,
and Console.
- Remove the left knee bolster bracket. Refer to
Driver Knee Bolster Bracket Replacement
in Instrument Panel, Gages,
and Console.
- To access the left lower brake pedal to vacuum brake booster mounting
nut, remove the steering column mounting nuts. Refer to
Steering Column Replacement
in Steering Wheel and Column.
- Lower the steering column and secure it.
- Remove
the vacuum brake booster pushrod retaining clip (2) from the brake pedal clevis
pin.
- Remove the foam spacer from the brake pedal clevis pin.
- Disconnect the brake booster pushrod from the brake pedal clevis pin.
- Remove the vacuum brake booster mounting nuts (2, 3) from the
brake pedal assembly.
- Remove the vacuum brake booster from the
vehicle.
- Remove the vacuum brake booster mounting gasket, if gasket replacement
is necessary.
Installation Procedure
- Install the vacuum brake booster mounting gasket to the booster, if removed
previously.
- Install the vacuum brake booster to the
vehicle.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the brake pedal assembly to booster stud mounting nuts (1, 2, 3)
to the booster studs.
Tighten
Tighten the brake pedal assembly to booster stud
mounting nuts to 36 N·m (27 lb ft).
- Apply
a small amount of lubricant, GM P/N 12346293 or equivalent to the clevis
pin of the brake pedal.
- Connect the vacuum brake booster pushrod to the brake pedal clevis pin.
- Install the foam spacer (1) to the brake pedal clevis pin.
- Install the retainer clip (2) to the brake pedal assembly clevis
pin.
- Install the steering column.
- Install the steering column mounting attaching nuts. Refer to
Steering Column Replacement
in Steering Wheel and Column.
- Install the left knee bolster bracket. Refer to
Driver Knee Bolster Bracket Replacement
in Instrument Panel, Gages,
and Console.
- Install the left closeout insulator panel. Refer to
Instrument Panel Insulator Panel Replacement - Left Side
in Instrument Panel, Gages,
and Console.
- Install the inlet heater pipe. Refer to
Heater Inlet Pipe Replacement
in Heating, Ventilation and Air Conditioning.
- Install the shift control cable to the shift cable bracket. Refer to
Automatic Transmission Range Selector Cable Replacement - Console
in Automatic Transaxle - 4T80-E.
- Position the gearshift lever into park.
- Install the brake booster vacuum check valve (2)
to the vacuum brake booster.
- Install the Master cylinder to the vacuum brake booster. Refer to
Master Cylinder Replacement
.
- Connect the electrical connector (2) to the left strut tower. Refer to
Master Electrical Component List
in Wiring
Systems.
- Install the accelerator control cable. Refer to
Accelerator Control Cable Replacement
in Engine Controls - 4.6L.
- Install the accelerator control cable bracket. Refer to
Accelerator Control Cable Bracket Replacement
in Engine Controls -
4.6L.
- Install the cruise control module. Refer to
Cruise Control Module Replacement
in Cruise Control.
- Remove the blocks from the front wheels.
- Release the parking brake.