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Valve Body & Pressure Switch (4L60-E): Installation

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NOTE: When installing bolts throughout this procedure, ensure to use the correct bolt size and length in the correct location as specified.
  1. Install the 7 checkballs 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.
  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:
    • The transmission fluid pressure manual valve position switch (1). See Figure.
    • 1-2 shift control solenoid.
    • 2-3 shift control solenoid.
    • Pressure control solenoid.
    • TCC PWM solenoid.
    • 3-2 shift control solenoid.
  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: Identifying Serviceable Components
G00056986Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing/Installing Fluid Indicator Stop Bracket
G00056987Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing TCC Retainer Bolts
G00056989Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing & Installing Fluid Pressure Switch Bolts
G00056991Courtesy of GENERAL MOTORS CORP.
Fig 5: Inspecting Fluid Pressure Switch For Damage
G00089856Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing & Installing Manual Detent Lever
G00089857Courtesy of GENERAL MOTORS CORP.
Fig 7: Lowering & Raising Valve Body
G00056992Courtesy of GENERAL MOTORS CORP.
Fig 8: Installing Check Balls In Valve Body
G94B36609Courtesy of GENERAL MOTORS CORP.
Fig 9: Installing Manual Valve To Detent Lever
G92G12571Courtesy of GENERAL MOTORS CORP.
Fig 10: Location Of 1st Bolt To Hold Valve Body In Place
G00089861Courtesy of GENERAL MOTORS CORP.
Fig 11: Valve Body Bolt Tightening Sequence
G99C03603Courtesy of GENERAL MOTORS CORP.
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