Grand Prix V6-3.8L SC VIN 1 (1997)
Transmission Cooler: Service and Repair
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Tool Required:
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J 35944-A Oil Cooler and Line Flusher
1. Remove fill cap J 35944-A and fill with 0.6 liter (20 ounces) of flushing solution.
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Do not overfill.
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Follow manufacturer's suggested procedures for solution handling.
2. Replace cap on J 35944-A and pressurize to 550 - 700 kPa (80 - 100 psi).
3. Connect discharge hose to the transaxle end of the oil cooler pipe that feeds the bottom fitting of the oil cooler and clip the discharge hose to the
oil drain container.
4. Connect the feed hose from J 35944-A to remaining oil cooler pipe.
5. With the water valve on J 35944-A in the "OFF" position, connect the water supply to the tool.
6. Turn water supply on.
7. Flush the transaxle fluid by opening the water valve to the "ON" position for about 10 seconds.
Important: If water does not flow through the cooler, the system is completely plugged. Do not complete the flushing procedure. Replace the
cooler and/or the cooler pipes as required.
8. Close the water valve and clip the discharge hose to the 5-gallon pail. Cover the pail with a shop towel to prevent splashing.
9. Turn the water valve to the "ON" position and depress the trigger to mix flushing solution into the water flow. Use the bale clip provided to hold
the trigger down.
10. Flush the cooler with water and solution for two minutes. During this flush, attach the air supply to the air valve located on J 35944-A for three to
five seconds every 15-20 seconds. This will create a surging action to ensure complete cleaning.
11. Release trigger and turn the water valve off.
12. Disconnect both hoses from the oil cooler pipes.
13. Reconnect the hoses to the pipes opposite the initial flush to perform a backflush.
14. Repeat Steps 9 and 10.
15. Release the trigger and allow water to rinse for one minute.
16. Turn water valve and water supply off.
17. Attach the air supply to the air valve and dry the system out with air until no moisture is seen leaving the discharge hose.
18. Connect cooler feed pipe to the transaxle.
19. Reconnect discharge hose to cooler return pipe and clip hose to oil drain container.
20. After filling the transaxle with fluid, start the engine and run for 30 seconds. This will remove any residual moisture from the oil cooler. A
minimum of two quarts of fluid should flow during the 30-second period. If fluid flow is insufficient, check the fluid flow from the transaxle by
disconnecting the feed line at the cooler and observe the flow with the engine running.
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If flow from the transaxle is insufficient, inspect transaxle for cause.
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If flow from the transaxle is sufficient, inspect cooler pipes and fittings and repeat cooler flushing procedure. If flow through cooler is still
insufficient, replace the cooler.
21. Remove the discharge hose and connect the cooler pipe.
Adjust
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Fluid level.
NOTICE: Do not overfill transaxle. Overfilling causes foaming and loss of fluid through the vent and may damage the automatic transaxle.
Inspect
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For proper completion of repairs.
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For proper fluid level.
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For fluid leaks.
