Valve Body & Pressure Switch: Installation

1. Install the checkballs (1-7) in the valve body. See Fig 8. Install the control valve body to the transmission case while simultaneously connecting the manual valve link to the manual valve. See Fig 7.
NOTE: When installing bolts throughout this procedure, ensure to use the correct bolt size and length in the correct location as specified.
2. Verify the manual valve link (3) is installed properly to the inside detent lever (1) and the manual valve (2). See Fig 9. 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 10. DO NOT install the transmission fluid indicator stop bracket and bolt at this time.
3. Install but DO NOT tighten the control valve body bolts which retain only the valve body directly. See Fig 11.
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).
5. Install the manual detent spring. Install but DO NOT tighten the manual detent spring retaining bolt. See Fig 6. Install the transmission fluid pressure switch. See Fig 4. Install but DO NOT tighten the control valve body bolts which retain the transmission fluid pressure switch to the control valve body. See Fig 4.
6. Tighten the control valve body bolts in a spiral pattern starting from the center, as indicated by the arrows. Tighten the control valve body bolts (in sequence) to 97 INCH lbs. (11 N.m). See Fig 11.
7. Ensure the manual detent spring is aligned properly with the detent lever. Tighten the manual detent spring bolt to specification. See TORQUE SPECIFICATIONS .
8. 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 .
9. 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 (1-3).
10. Install the TCC PWM solenoid (1) to the control valve body. Install the TCC PWM solenoid retainer (2). See Figure.
11. Install the transmission fluid indicator stop bracket (1) and bolt (2). See Fig 2. Tighten the transmission fluid indicator stop bracket bolt to specification. See TORQUE SPECIFICATIONS .
12. Connect the internal wiring harness electrical connectors to the following components: transmission fluid pressure manual valve position switch (1), 1-2 shift solenoid (2), 2-3 shift solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5), and the 3-2 shift solenoid (6). See Figure.
13. Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION .

Fig 1: Internal View Of Serviceable Components

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing & Installing Fluid Indicator Stop

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Fig 3: Removing & Installing TCC Retainer Bolts

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Fig 4: Removing & Installing Fluid Pressure Switch Bolts

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Fig 5: Inspecting Fluid Pressure Switch For Damage

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Fig 6: Removing & Installing Manual Detent Lever

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Fig 7: Lowering & Raising Valve Body

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Fig 8: Installing Check Balls In Valve Body

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Fig 9: Installing Manual Valve To Detent Lever

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Fig 10: Location Of 1st Bolt To Hold Valve Body In Place

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Fig 11: Valve Body Bolt Tightening Sequence

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