Chevrolet Silverado / GMC Sierra. Manual - part 804
VALVE BODY, CONTROL SOLENOID TORQUE SEQUENCE
Fig. 186: Valve Body, Control Solenoid Torque Sequence
Courtesy of GENERAL MOTORS CORP.
Tip: Hand tighten only.
4
A/Trans Manual Shift Shaft Position Switch
Harness Clip
Tip: The wiring harness clip on the manual shift
shaft position switch does not need to be replaced
if damaged or missing. The clip functions only as
a manufacturing assembly aid to keep the harness
clear during an automated bolt installation
process. If the clip is damaged, simply remove
and discard.
5
A/Trans Manual Shift Shaft Position Switch
Electrical Connector
Tip: Connect and lock the manual shift shaft
position switch electrical connector to the control
solenoid valve assembly.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Valve Body, Control Solenoid Torque Sequence
CONTROL SOLENOID VALVE ASSEMBLY CONTACT GAP INSPECTION
Callout
Component Name
Preliminary Procedure
1. Hand tighten the last 6 bolts before final torque sequence.
2. The 2 "heat sink" bolts must be tightened last.
NOTE:
Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly.
Failure to follow the required sequencing may result in transmission malfunction.
1
Bolts M5 x 45 (Qty: 5)
2
Bolt M5 x 55
Procedure:
Tighten all 18 bolts in the sequence shown.
Tighten: 8 N.m (71 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 187: Inspecting Control Solenoid Valve Assembly Contact Gap
Courtesy of GENERAL MOTORS CORP.
Control Solenoid Valve Assembly Contact Gap Inspection
INPUT AND OUTPUT SPEED SENSOR ASSEMBLY INSTALLATION
Callout
Component Name
1
Control Solenoid (w/Body and TCM) Valve
Assembly
Tip: Inspect the contact area between the "heat
sink" area of the control solenoid valve
assembly and the valve body. There should be
no visible gap. If a gap exists, loosen all 18
bolts and retighten in the required sequence.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 188: Installing Input and Output Speed Sensor Assembly
Courtesy of GENERAL MOTORS CORP.
Input and Output Speed Sensor Assembly Installation
Callout
Component Name
1
A/Trans Input and Output Speed Sensor Wiring
Harness Clip (Qty: 2)
Tip: Inspect the 2 wiring harness clips for
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado