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Valve Body & Pressure Switch: Installation

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the 7 checkballs in the valve body. See Fig 2 . Install the control valve body to the transmission case while simultaneously connecting the manual valve link to the manual valve. See Fig 1 .
  2. Verify the manual valve link (3) is installed properly to the inside detent lever (1) and the manual valve (2). See Fig 3 . 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 4 . DO NOT install the transmission fluid indicator stop bracket and bolt at this time.
    NOTE: When installing bolts throughout this procedure, ensure to use the correct bolt size and length in the correct location as specified.
  3. Install but do not tighten the control valve body bolts which retain only the valve body directly. See Fig 5 . 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).
  4. Install the manual detent spring. Install but DO NOT tighten the manual detent spring retaining bolt. See Figure . Install the transmission fluid pressure switch. See Figure . 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.
  5. Tighten the control valve body bolts in a spiral pattern starting from the center, as indicated by the arrows. See Fig 5 . Tighten the control valve body bolts (in sequence) to specification. See TORQUE SPECIFICATIONS  .
  6. Ensure the manual detent spring is aligned properly with the detent lever. Tighten the manual detent spring bolt to specification. See TORQUE SPECIFICATIONS  .
  7. Install the TCC solenoid with a new "O" ring seal to the valve body. Install the TCC solenoid bolts. Tighten the TCC solenoid retaining bolts to specification. See TORQUE SPECIFICATIONS  .
  8. Install the internal wiring harness to the valve body. The internal wiring harness has a tab (1) on the edge of the conduit. Place the tab between the valve body and the pressure switch in the location shown (2). See Figure . Press the harness into position on the valve body bolt bosses (1 and 3).
  9. Install the TCC PWM solenoid (1) to the control valve body. Install the TCC PWM solenoid retainer (2). See Figure .
  10. 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  .
  11. Connect the internal wiring harness electrical connectors to the following components:
    • The transmission fluid pressure manual valve position switch (1). See Figure .
    • The 1-2 shift control solenoid.
    • The 2-3 shift control solenoid.
    • The pressure control solenoid.
    • The TCC PWM solenoid.
    • The 3-2 shift control solenoid.
  12. Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See RECOMMENDED FLUIDS  and FLUID CAPACITIES  under LUBRICATION.
Fig 1: Lowering/Raising Valve Body
G00056992Courtesy of GENERAL MOTORS CORP.
Fig 2: Installing Check Balls In Valve Body
G94B36609Courtesy of GENERAL MOTORS CORP.
Fig 3: Installing Manual Valve To Detent Lever
G92G12571Courtesy of GENERAL MOTORS CORP.
Fig 4: Locating 1st Bolt Holding Valve Body In Place
G00089861Courtesy of GENERAL MOTORS CORP.
Fig 5: Identifying Valve Body Bolt Tightening Sequence
G99C03603Courtesy of GENERAL MOTORS CORP.
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