1. Disconnect the battery negative cable assembly from the battery negative terminal. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

   in General Information.
2. Raise the vehicle. Support the vehicle with safety stands. Refer to General Vehicle Lifting and Jacking in General Information.
3. Remove the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid/Filter Changing .



4. Remove the reverse boost valve bushing retainer ring.
5. Remove the following parts: Refer to
   
   

5.1.	The reverse boost valve bushing

5.2.	The reverse boost valve

5.3.	The pressure regulator spring retainer

5.4.	The pressure regulator spring

5.5.	The pressure regulator valve

5.6.	The reverse boost valve bushing

Tools Required

J 36850 Transjel® Transmission Assembly Lubricant

1. Install the pressure regulator valve. Retain the pressure regulator valve in position with J 36850 .
2. Pre-assemble the following parts: Refer to
   
   

2.1.	The reverse boost valve bushing

2.2.	A new reverse boost valve

2.3.	A new pressure regulator spring retainer

2.4.	The added isolator pressure regulator spring

2.5.	The pressure regulator spring

3. Install the pre-assembled parts into the pump bore.



4. Install the reverse boost valve bushing retainer ring while holding the reverse boost valve bushing in place. Ensure the retainer ring is in the groove.
5. Install the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid/Filter Changing .
6. Remove the safety stands.
7. Lower the vehicle.



8. Connect the battery negative cable assembly to the battery negative terminal.

Tighten
Tighten the terminal bolt to 15 N·m (11 lb ft).

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.