Chevrolet Silverado / GMC Sierra. Service manual — part 907

Fig. 228: View Of Converter Relief Valve & Spring
Courtesy of GENERAL MOTORS CORP.

22. Remove the spring (2) and the converter relief valve (1).

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 229: View Of J 24459-5 & J 43770
Courtesy of GENERAL MOTORS CORP.

23. Install J 24459-5 (1) onto J 43770 (2). See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 230: Using J 24459-5 And J 43770 To Compress Converter Flow Valve Spring
Courtesy of GENERAL MOTORS CORP.

24. Align J 43770 (5) and J 24459-5 (4) with the oil pump cover so that the following

conditions are met:. See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado

The threaded rod of J 43770 is facing down. See Special Tools.

Two J 43770 bolt holes align with 2 bolt holes in the oil pump cover. See Special
Tools.

25. Install J 43770 (5) onto the oil pump cover assembly (1). See Special Tools.

26. Install 2 oil pump cover retaining bolts (2).

27. Align the slot in J 24459-5 (4) with the retainer pin (3). See Special Tools.

28. Using J 24459-5 (4) and J 43770 (5), compress the torque converter clutch (TCC) valve

spring until the retainer pin (3) is loose. See Special Tools.

29. Using a pick, push the pin through the oil pump cover (1).

30. Turn the oil pump cover so that the retaining pin is accessible.

31. Relieve the TCC valve spring tension.

32. Remove tools J 43770 (5) and J 24459-5 (4). See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado