Chevrolet Silverado / GMC Sierra. Manual - part 766
CONTROL SOLENOID VALVE AND TRANSMISSION CONTROL MODULE
ASSEMBLY REPLACEMENT
2
Tighten: 8 N.m (71 lb in)
NOTE:
Refer to Fastener Notice .
3
Manual Shift Shaft Position Switch Assembly
Procedure:
Align the switch activator slide with the manual valve link.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 81: Control Solenoid Valve and Transmission Control Module Assembly
Replacement
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedures:
Remove the control valve body assembly. Refer to Control Valve Lower Body and
Upper Body Replacement.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
CONTROL VALVE LOWER BODY AND UPPER BODY REPLACEMENT
1
Manual Shift Shaft Position Switch Assembly Electrical Connector
Tip: Release the connector lock before disconnecting. Engage the connector
lock after connecting.
2
Control Module Assembly Heat Sink Bolt (Qty: 2)
Tip: Tighten in specified sequence.
Tighten: 8 N.m (71 lb in)
NOTE:
Refer to Fastener Notice .
3
Control Solenoid Valve Assembly Bolt (Qty: 4)
Tip: Tighten in specified sequence.
Tighten: 8 N.m (71 lb in)
4
Control Solenoid Valve Assembly Bolt (Qty: 5)
Tip: Tighten in specified sequence.
Tighten: 8 N.m (71 lb in)
5
Control Solenoid Valve and Module Assembly
Procedure
1. Inspect the 4 filter plate retaining tabs. A broken tab may not adequately
secure the filter plate to the control solenoid valve assembly.
2. Align the control solenoid valve assembly with the lower valve body
locator pin when assembling.
3. Reset the transmission adaptive pressure (TAP) values. Refer to Service
Fast Learn Adapts.
6
Filter Plate
Tip: Discard filter plate and replace with new.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 82: Control Valve Lower Body and Upper Body Replacement
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedures:
Remove the transmission electrical connector. Refer to Automatic Transmission
Electrical Connector Passage Sleeve Replacement.
1
Manual Shaft Detent Bolt
Tighten: 12 N.m (106 lb in)
NOTE:
Refer to Fastener Notice .
2
Manual Shaft Detent Assembly
3
Control Valve Assembly Bolt (Qty: 6)
Procedure
Do not remove all the bolts in the control valve body assembly. Remove
only the bolts indicated.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado