Chevrolet Silverado / GMC Sierra. Manual - part 985
Fig. 486: Control Valve Assembly Bolts
Courtesy of GENERAL MOTORS CORP.
12. Install 11 control valve assembly bolts (1) and 4 control valve assembly bolts (2).
Tighten: Tighten the bolts to 12 N.m (108 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 487: Manual Shift Shaft Detent Spring
Courtesy of GENERAL MOTORS CORP.
13. Install the manual shift shaft detent spring (2) onto the main valve body (4).
14. Make sure the pin of the manual shift shaft detent spring (2) engages the slot of the IMS and
the detent spring roller rests on the detent lever (3).
15. Install 2 manual shift shaft detent spring bolts (1).
Tighten: Tighten the bolts to 12 N.m (108 lb in).
WIRING HARNESS INSTALLATION
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Tools Required
J 44247 Internal Wiring Harness Installer. See Special Tools.
Installation
Fig. 488: Using J44247 To Install Internal Wiring Harness Connector
Courtesy of GENERAL MOTORS CORP.
1. Install the internal wiring harness connector by hand into the transmission case.
2. Using J 44247 (2), install the connector of the internal wiring harness (1) into the
transmission case. See Special Tools. The 4 tabs on the wiring harness connector should
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
snap into place.
3. Make sure the wiring harness connector is securely in place.
Fig. 489: Identifying Main valve Body Solenoids, Switches & Harness
Courtesy of GENERAL MOTORS CORP.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado