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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 219 (AUTOMATIC TRANSMISSION SERVICING)REMOVAL & INSTALLATIONVALVE BODY & PRESSURE SWITCHINSTALLATION
1999 GMC Forward Control 5.7 R, Automatic

Valve Body & Pressure Switch: Installation

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the checkballs (1-7) 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, ensure 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. Tighten the control valve body bolts (in sequence) to specification. See Fig 4 and 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.
  15. 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).
  16. Install the TCC PWM solenoid (1) to the control valve body. See Figure.
  17. Install the TCC PWM solenoid retainer (2).
  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:
    • 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).
    • 3-2 shift solenoid (6). See Figure.
  20. Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION.
  21. Lower the vehicle.
  22. Fill transmission with appropriate fluid to proper level. See LUBRICATION .
Fig 1: Installing Check Balls In Valve Body
G94B36609Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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