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Valve Body & Pressure Switch: Installation

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  1. Install the 7 checkballs in the valve body. See Fig 1 .
  2. Install the control valve body to the transmission case while simultaneously connecting the manual valve link to the manual valve. See Figure .
  3. Verify the manual valve link (3) is installed properly to the inside detent lever (1) and the manual valve (2). See Fig 2 .
  4. Install one bolt (M6 X 1.0 X 47.5) hand tight in the center (1) of the valve body to hold it in place. See Fig 3 .
    NOTE: When installing bolts throughout this procedure, be sure to use the correct bolt size and length in the correct location as specified.
  5. DO NOT install the transmission fluid indicator stop bracket and bolt at this time. Install but DO NOT tighten the control valve body bolts which retain only the valve body directly. See Fig 4 . Each numbered bolt location corresponds to a specific bolt size and length, as indicated by the following:
    • M6 X 1.0 X 65.0 (1).
    • M6 X 1.0 X 54.4 (2).
    • M6 X 1.0 X 47.5 (3).
    • M6 X 1.0 X 35.0 (4).
    • M8 X 1.0 X 20.0 (5).
    • M6 X 1.0 X 12.0 (6).
    • M6 X 1.0 X 18.0 (7).
  6. Install the manual detent spring.
  7. Install but DO NOT tighten the manual detent spring retaining bolt. See Figure .
  8. Install the transmission fluid pressure switch. See Figure .
  9. Install but DO NOT tighten the control valve body bolts which retain the transmission fluid pressure switch to the control valve body. See Figure .
    NOTE: Torque valve body bolts in a spiral pattern starting from the center. If the bolts are torqued at random, valve bores may be distorted and inhibit valve operation.
  10. Tighten the control valve body bolts in a spiral pattern starting from the center, as indicated by the arrows. See Fig 4 . Tighten the control valve body bolts (in sequence) to specification. See TORQUE SPECIFICATIONS  .
  11. Ensure the manual detent spring is aligned properly with the detent lever. Tighten the manual detent spring bolt to specification. See TORQUE SPECIFICATIONS  .
  12. Install the TCC solenoid with a new "O" ring seal to the valve body.
  13. Install the TCC solenoid bolts. Tighten the TCC solenoid retaining bolts to specification. See TORQUE SPECIFICATIONS  .
  14. Install the internal wiring harness to the valve body. The internal wiring harness has a tab (1) on the edge of the conduit. See Fig 5 .
  15. Place the tab between the valve body and the pressure switch in the location shown (2). See . Press the harness into position on the valve body bolt bosses (1, 3). See Fig 6 .
  16. Install the TCC PWM solenoid (1) to the control valve body.
  17. Install the TCC PWM solenoid retainer (2). See Figure .
  18. Install the transmission fluid indicator stop bracket (1) and bolt (2). See Figure . Tighten the transmission fluid indicator stop bracket bolt to specification. See TORQUE SPECIFICATIONS  .
  19. Connect the internal wiring harness electrical connectors to the following components:
    • The transmission fluid pressure manual valve position switch. See Figure .
    • 1-2 shift control solenoid.
    • 2-3 shift control solenoid.
    • Pressure control solenoid.
    • TCC PWM solenoid.
    • 3-2 shift control solenoid.
  20. Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION.
Fig 1: Installing Check Balls In Valve Body
G94B36609Courtesy of GENERAL MOTORS CORP.
Fig 2: Installing Manual Valve To Detent Lever
G92G12571Courtesy of GENERAL MOTORS CORP.
Fig 3: Location Of 1st Bolt To Hold Valve Body In Place
G00089861Courtesy of GENERAL MOTORS CORP.
Fig 4: Valve Body Bolt Tightening Sequence
G99C03603Courtesy of GENERAL MOTORS CORP.
Fig 5: Installing Internal Wiring Harness To Valve Body
G00202989Courtesy of GENERAL MOTORS CORP.
Fig 6: Positioning Wiring Harness
G00202990Courtesy of GENERAL MOTORS CORP.
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