Control Valve Body Installation

Special Tools

• J 25025-5:  Dial Indicator Mounting Post-M6 x 1.00
• J 36850:  Transjel Lubricant

Fig 1: Solenoid Assembly & Wiring Harness
Courtesy of GENERAL MOTORS CORP.
1. 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.
2. Install the transmission wiring harness pass-through connector into the transmission case. Ensure connector tabs lock into place.
3. Move the harness to one side in order to install the valve body.
Fig 2: Ball Check Valves
Courtesy of GENERAL MOTORS CORP.
NOTE: Valve bodies are model dependent.
4. Install the ball check valves (2-6, 8, 12) in the valve body and retain ball check valves with J 36850:  transjel lubricant or an equivalent.
Fig 3: Manual Valve Link To Manual Valve
Courtesy of GENERAL MOTORS CORP.
CAUTION: 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.
5. Install the valve body (1) over the J 25025-5:  mounting post, and connect the manual valve link to the manual valve.
6. Install 2 valve body bolts to hold the valve body in place.
7. Remove the J 25025-5:  mounting post.
Fig 4: Valve Body Bolts
Courtesy of GENERAL MOTORS CORP.
8. Install the 12 valve body bolts (62), 2 bolts (59) and 3 bolts (120) that are shown only.
9. Finger tighten the bolts.
Fig 5: TCC Solenoid Retaining Bolts
Courtesy of GENERAL MOTORS CORP.
10. Install the transmission wiring harness on the valve body.
CAUTION: Refer to Fastener Caution .
11. Install the torque converter clutch (TCC) solenoid valve and bolts (68). Tighten the bolts to 8-14 N.m (6-10 lb ft).
Fig 6: Identifying Bolt Locations
Courtesy of GENERAL MOTORS CORP.
CAUTION: 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.
12. Inspect to ensure all of the valve body bolts are in the correct location.

    Each bolt number refers to a specific bolt size, as indicated in the following list:

    • 59 - M6 x 1.0 x 35.0 (Qty: 2)
    • 62 - M6 x 1.0 x 47.5 (Qty: 12)
    • 120 - M6 x 1.0 x 54.4 (Qty: 3)
13. Tighten the bolts from the center of the valve body working your way out in a spiral pattern to the outside edge. Tighten the bolts to 8-14 N.m (6-10 lb ft).
Fig 7: TCC/PWM Solenoid & Clip
Courtesy of GENERAL MOTORS CORP.
14. Install the torque converter clutch pulse width modulation (TCC PWM) solenoid valve (396) and the solenoid retainer (395).
Fig 8: Electrical Component Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
15. Snap the wiring harness in place on the valve body bolts. Ensure the harness loom tab is located under the TFP switch.
16. Install the wiring connectors to the electrical components as indicated in the following list:
    CAUTION: Use sufficient support, two fingers behind the manual shift detent lever with shaft position switch assembly to prevent damage to the assembly.
    • 1 - Manual shift detent lever with shaft position switch assembly
    • 2 - 1-2 shift solenoid
    • 3 - 2-3 shift solenoid
    • 4 - Pressure control solenoid (PCS)
    • 5 - TCC PWM solenoid
    • 6 - Input speed sensor (ISS)