REMOVAL & INSTALLATION
See Figure 1
The vacuum control modulator is accessible from under the vehicle on the driver's side.
- Disconnect the negative battery cable.
- With the emergency brake fully engaged, place the vehicle in NEUTRAL with blocks behind the rear wheels to prevent any vehicle movement.
- Raise the vehicle and safely support it on jackstands.
- From underneath the vehicle, remove the vacuum hose attached to the vacuum assembly. Inspect the hose for cracks or tears and replace if needed.
- Remove the vacuum diaphragm retainer bolt and clamp securing the assembly to the side of the transmission.
Do not bend or pry the clamp during removal.
- Remove the vacuum control modulator and rod from the transmission body. If the assembly is difficult to remove, twist the modulator back and forth while carefully pulling it out.
- Once removed, install the vacuum control rod back into the transmission assembly.
- Apply a thin coat of oil around the edge of the vacuum control assembly and install into the transmission using a twisting back and forth motion.
- Secure the vacuum assembly using the retainer bolt. Tighten the bolt to 80-106 inch lbs. (9-12 Nm).
- Connect the vacuum hose to the control assembly.
- Lower the vehicle and connect the negative battery cable.