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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 48 (AUTOMATIC TRANSAXLE - INTRODUCTION & REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSCONTROL VALVE BODY REPLACEMENTINSTALLATION PROCEDURE
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Installation Procedure

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Installation Procedure
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Channel Plate Checkballs
    GM894856Courtesy of GENERAL MOTORS CORP.
  1. Make sure the checkballs are in the proper locations on the channel plate. Retain the checkballs with petroleum jelly.
    2. Fig 2: Removing & Installing Spacer Plate Support & Spacer Plate
    GM893964Courtesy of GENERAL MOTORS CORP.
  2. Install a new spacer plate-to-channel plate gasket onto the channel plate.
  3. Install the spacer plate with the spacer plate filter attached.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Hand start the spacer plate support bolts and install the spacer plate support.

    Tighten:  Tighten the spacer plate support bolts to 14 N.m (10 lb ft).

    5. Fig 3: Removing & Installing Control Valve Body Assembly
    GM893974Courtesy of GENERAL MOTORS CORP.
  5. Install a new control valve body to the spacer plate gasket onto the spacer plate.
  6. Install the control valve body assembly onto the gasket. Hand start the control valve body assembly bolts to hold the valve body in place.
    7. Fig 4: Removing & Installing Transmission Fluid Pressure Manual Valve Position Switch & Identifying O-Rings
    GM893966Courtesy of GENERAL MOTORS CORP.
  7. Inspect the TFP switch assembly in order to verify the condition and the correct location of the pressure switch O-rings. If necessary, replace the TFP switch assembly O-rings.
  8. Install the TFP switch assembly onto the control valve body assembly.
    9. Fig 5: Identifying Control Valve Body Bolt Locations
    GM893928Courtesy of GENERAL MOTORS CORP.
  9. Install the remaining control valve body bolts.
    10. Fig 6: Identifying Control Valve Body Bolts
    GM892796Courtesy of GENERAL MOTORS CORP.
  10. Hand start the bolts.

    Tighten:  Tighten the control valve body bolts to 12 N.m (9 lb ft).

    11. Fig 7: Connecting Wire Harness Connectors To Pressure Control Solenoid, 1-2 Shift Solenoid, 2-3 Shift Solenoid, TFP Switch Assembly & TCC Solenoid
    GM893969Courtesy of GENERAL MOTORS CORP.
  11. Connect the transaxle wiring harness to the following components:
    • TFP switch assembly
    • Pressure control solenoid (red connector)
      • IMPORTANT: The 1-2 shift solenoid wires are red and green. The 2-3 shift solenoid wires are red and yellow.
    • 1-2 shift solenoid
    • 2-3 shift solenoid
    • TCC solenoid
    12. Fig 8: Removing & Installing Oil Pump Assembly & Oil Pump Shaft
    GM893972Courtesy of GENERAL MOTORS CORP.
  12. Install the oil pump shaft into the control valve body assembly.
    13. IMPORTANT: If necessary, rotate the oil pump shaft while installing the oil pump assembly in order to engage the shaft splines to the splines on the oil pump rotor.
  13. Install the oil pump assembly onto the oil pump shaft and the control valve body. Hand start and install the oil pump assembly bolts.

    Tighten:  Tighten the oil pump bolts to 12 N.m (9 lb ft).

  14. Install the transaxle case side cover. Refer to Case Side Cover Replacement .
  15. Start the engine, warm up the transaxle, and check for leaks.
  16. Inspect for proper fluid level. Refer to Transmission Fluid Checking Procedure .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.