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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 255 (Automatic Transaxle - 4T40-E/4T45-E (Troubleshooting)) >> Troubleshooting >> Shift Solenoid Leak Test >> Leak Test Procedure

Leak Test Procedure

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • This procedure tests On/Off type solenoid valves.
  • Visually inspect the physical condition of the solenoid before testing. Inspect the O-rings before and after the test to be sure that they are not cut or damaged.
  1. Remove the solenoid from the control valve body. Refer to 1-2 Shift Solenoid Valve Replacement or 2-3 Shift Solenoid Valve Replacement .
  2. Install the 1-2 shift solenoid valve or the 2-3 shift solenoid valve into bore number 2 of the J 44246  and install the factory retainer clip to retain the solenoid.
    Fig 1: Installing Valve Into Bore No. 2 Of J 44246
    GM656898Courtesy of GENERAL MOTORS CORP.
  3. Connect the solenoid testing harness supplied with the J 44246  to the solenoid.
    Fig 2: Connecting Solenoid Testing Harness To Solenoid
    GM656903Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not use air pressure in excess of 120 psi. Excessive pressure will not allow the solenoid ball check valve to seat properly. Recommended air pressure is 50 psi.
  4. Apply compressed air to the J 44246  .
  5. Air should flow through the solenoid. If air does not flow through the solenoid, replace the solenoid. Refer to Control Valve Body Replacement .
  6. Connect the solenoid testing harness to the (12 volt) positive and negative (-) battery terminals.
  7. Observe if the solenoid is operating electrically. An audible clicking noise can be heard when connecting or disconnecting power.
    IMPORTANT:
    • All solenoids need to be energized to seal.
    • A small amount of air leakage is normal +/- 21 kPa (+/- 3 psi).
  8. Observe the air flow through the solenoid. The flow will completely or nearly completely stop. Replace the solenoid if there continues to be an obvious air leak when the solenoid is energized.
    IMPORTANT: Inspect the O-rings after the test to be sure that they are not cut or damaged.
  9. Install the solenoid into the control valve body. Refer to 1-2 Shift Solenoid Valve Replacement or 2-3 Shift Solenoid Valve Replacement .
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