Cost: $15

Difficulty:

Procedure for changing the fluid and filter on a 4hp22 automatic.

Procedure

• 3 qt of ATF fluid.
• Ramps or stands.
• Allen wrenches and torx screwdriver.
• Brake cleaner spray.

1. First raise the car up and place on suitable jackstands or ramps.
2. Place drain pan under and remove metric allen bolt in the center of the pan. Do this with the fluid warm, so it drains more completely. Avoid burning yourself on the fluid.
3. Remove the large nut holding the dipstick tube and move the tube back a 1/2 inch or so.
4. Remove the 6 perimeter bolts and brackets on the pan, making note that some of the brackets are angled for the corners of the pan. Lower the pan.

5. Clean the pan out with brake spray cleaner and clean the two rectangular magnets in the bottom. Replace rubber gasket.
6. Remove the three torx screws that hold the filter in place and change the filter making sure to replace the oring on the top of the filter.
7. Re-install the pan and the filler tube and fill the transmission with fluid.
8. It takes approximately 3 quarts on a filter change. Dexron ii or Mercon.
9. In the future I would change the transmission fluid at every oil change since it only changes 50% of the fluid in it.

Thanks to Bill Rickard