Chevrolet Silverado / GMC Sierra. Service manual — part 967

Fig. 428: Identifying Control Relief Spring & Control Relief Valve
Courtesy of GENERAL MOTORS CORP.

5. Install the control relief valve (1) and spring (2).

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 429: Compressing Control Relief Valve Spring
Courtesy of GENERAL MOTORS CORP.

6. Compress the spring with J 43773 (2). See Special Tools.

7. Install the retaining clip (1).

8. Make sure the retaining clip is below the valve body surface.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

CONTROL VALVE BODY ASSEMBLE

Tools Required

J 33163 Valve Tray Set. See Special Tools.

J 43773 Valve Spring Compressor. See Special Tools.

Main Valve Body Assemble

Fig. 430: Locating Exhaust Pressure Regulator Valve & Spring
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

1. Install the exhaust backfill valve (1) and the spring (2).

Fig. 431: Compressing Exhaust Pressure Regulator Valve Spring
Courtesy of GENERAL MOTORS CORP.

2. Compress the exhaust backfill spring with J 43773 (2). See Special Tools.

3. Install the retaining clip (1). Ensure the retaining clip (1) is below the valve body surface.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado