Chevrolet Silverado / GMC Sierra. Service manual — part 1153

Chips or debris

Cleaning Procedure

1. Clean all the valves, springs, bushings, and the control valve body in clean solvent.

2. Dry all the parts using compressed air.

Installation Procedure

Fig. 476: Identifying Isolator Valve & Regulator Apply Valve
Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Valve Springs Can Be Tightly Compressed

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

1. Install the following items:

1. The isolator valve (398)

2. The regulator apply spring (397)

3. The regulator apply valve (380)

4. The bore plug (381)

5. The bore plug retainer (395)

Caution .

IMPORTANT: Lubricate all parts with DEXRON®VI automatic transmission

fluid before installation.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 477: View Of 4-3 Sequence Valve & 3-4 Relay Valve
Courtesy of GENERAL MOTORS CORP.

2. Install the following items:

1. The 4-3 sequence valve spring (382)

2. The 4-3 sequence valve (383)

3. The 3-4 relay valve (384)

4. The bore plug (381)

5. The bore plug retainer (395)

Fig. 478: Locating 3-4 Shift Valve
Courtesy of GENERAL MOTORS CORP.

3. Install the following items:

1. The 3-4 shift valve (385)

2. The 3-4 shift valve spring (386)

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

3. The bore plug (381)

4. The bore plug retainer (395)

Fig. 479: View Of Reverse Abuse Valve & 3-2 Downshift Valve
Courtesy of GENERAL MOTORS CORP.

4. Install the following items:

1. The reverse abuse valve (387)

2. The reverse abuse valve spring (388)

3. The bore plug (359)

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado