Control Valve Body Installation
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Tools Required
- J 25025-5 Dial Indicator Mounting Post-M6 x 1. See Special Tools .00
- J 36850 Transjel Lubricant. See Special Tools .
- Inspect the wiring harness and solenoid assembly for the following conditions:
- Damage
- Cracked connectors
- Exposed wires
- Loose electrical terminals
- Damaged wiring loom and conduit
- Worn, missing, or cut pass-through connector O-ring seal.
- Install the transmission wiring harness pass-through connector into the transmission case. Ensure connector tabs lock into place.
- Move the harness to one side in order to install the valve body.
- Install the ball check valves (2-6, 8, 12) in the valve body and retain ball check valves with J 36850 or an equivalent. See Special Tools .
- Install the valve body over the J 25025-5 , and connect the manual valve link to the manual valve. See Special Tools .
- Install two valve body bolts (62) to hold the valve body in place.
- Remove the J 25025-5 . See Special Tools .
- Install the valve body bolts (62) that are shown only.
- Finger tighten the bolts.
- Inspect the Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly for the following conditions:
- Damage
- Debris
- Damaged or missing O-rings
- Cracked connector
- Loose electrical terminals
- Poor terminal retention
- Sediment in switch membrane
- Install the TFP manual valve position switch (69) and bolts (62, 70).
- Install the transmission wiring harness on the valve body.
- Install the TCC solenoid valve and bolts (68).
Tighten: Tighten the bolts to 8-14 N.m (6-10 lb ft).
- Check that all the valve body bolts are in the correct location.
Each bolt number refers to a specific bolt size, as indicated by the following list:
- 1 - M6 x 1.0 x 65.0
- 2 - M6 x 1.0 x 54.4
- 3 - M6 x 1.0 x 47.5
- 4 - M6 x 1.0 x 17.7
- 5 - M6 x 1.0 x 35.0
- Tighten the bolts from the center of the valve body working your way out in a spiral pattern to the outside edge.
Tighten: Tighten the bolts to 8-14 N.m (6-10 lb ft).
- Install the TCC PWM solenoid valve (396) and the solenoid retainer (395).
- Snap the wiring harness in place on the valve body bolts. Ensure the harness loom tab is located under the TFP switch.
- Install the wiring connectors to the electrical components as indicated by the following list:
- 1 - Transmission Fluid Pressure (TFP) manual valve position switch
- 2 - 1-2 Shift Solenoid
- 3 - 2-3 Shift Solenoid
- 4 - Pressure Control Solenoid (PCS)
- 5 - Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
- 6 - 3-2 Shift Solenoid
- 7 - Input speed sensor (ISS) - model dependent
IMPORTANT:
Secondary fluid pump connector (1) is used for M33 models only, connector (2) is used on ISS models.
IMPORTANT:
Valve bodies are model dependent.
IMPORTANT:
Some models do not use a #5 ball check valve.
NOTE:
Be sure all solenoids are installed with the electrical connectors facing the non-machined (cast) side of the valve body; otherwise, the solenoids will bind against the transmission case as the valve body bolts are tightened and damage may occur.
NOTE:
Refer to Fastener Notice
in Cautions and Notices.
NOTE:
Do not over-tighten the bolts. Over-tightening the bolts will distort the valve bores. Begin tightening from the center of the valve body tighten the bolts in a outward direction.