Chevrolet Silverado / GMC Sierra. Manual - part 974
Fig. 453: TFP Switch And Reverse Signal Pipe Bolts
Courtesy of GENERAL MOTORS CORP.
50. Install five bolts (1) and one bolt (2) retaining the TFP switch to the main valve body.
IMPORTANT:
Bolt (2) is slightly longer than the other bolts (1).
The TFP switch is retained by five bolts (1) and by bolt
(2).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Tighten: Tighten the bolts to 12 N.m (108 lb in).
51. Install the reverse signal pipe (2) onto the main valve body.
52. Install two bolts (3) retaining the reverse signal pipe and the shift valve body to the main
valve body.
Tighten: Tighten the bolts to 12 N.m (108 lb in).
3RD, 5TH AND REVERSE CLUTCH INSTALLATION
Tools Required
J 24204-2 Bar and Stud Assembly. See Special Tools.
J 36850 Transjel® Lubricant. See Special Tools.
J 44530 Piston Spring Compressor. See Special Tools.
Installation
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 454: View Of 3rd, 5th, And Reverse Clutch Piston Assembly
Courtesy of GENERAL MOTORS CORP.
1. Position the transmission case so that the front of the case is facing up.
2. Apply J 36850 to the inside diameter and outside diameter of the new 3rd, 5th, and reverse
IMPORTANT: Do not reuse the old 3rd, 5th, and reverse clutch piston
assembly. Install a new 3rd, 5th, and reverse clutch piston
assembly.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
clutch piston assembly (1). See Special Tools.
3. Align the new 3rd, 5th, and reverse clutch piston assembly (1) with the transmission case so
that the seal is facing down and the 1.016 mm (0.040 in) lubrication/cooling orifice is at the
top of the transmission case.
4. Install the 3rd, 5th, and reverse clutch piston assembly.
5. Gently tap the piston until the piston seats.
Fig. 455: Piston Return Spring Assemblies
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: The spring assemblies can be reused. If required, squeeze
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado