REMOVAL & INSTALLATION
The fluid should be changed with the transmission warm. A 20 minute drive at highway speeds should accomplish this.
- Raise and support the vehicle safely using jackstands.
If equipped with the Turbo Hydra-Matic 250 or 350 it may be necessary to support the transmission and remove the rear support crossmember.
- Depending on the type of transmission the crossmember may have to be removed from the vehicle, in order to remove the fluid pan bolts. If so, be sure to properly support the transmission before removing the crossmember.
- Place a large pan under the transmission pan. Remove all the front and side pan bolts. Loosen the rear bolts about four turns.
- Carefully pry the pan loose and allow most of the fluid to drain.
- Support the pan and remove the remaining bolts, then carefully lower the pan from the transmission. The pan will still have a fair amount of fluid, so keep it level as is is lowered. Remove the gasket. Clean the pan thoroughly with solvent, making sure to remove all bits of metal from the chip collector magnet, then air dry the pan. Be very careful not to get any lint from rags in the pan.
- Remove the strainer to valve body screws, the strainer and the gasket. Most transmissions will have a throw-away filter instead of a strainer.
- If there is a strainer, clean it in solvent and allow it to air dry.
- Install the new filter or cleaned strainer, as applicable, using a new gasket. Tighten the retaining screws to 12 ft. lbs. (16 Nm).
- Install the pan using a new gasket. Tighten the bolts evenly to 12 ft. lbs. (16 Nm) for most transmissions or to 8 ft. lbs. (11 Nm) for Powerglide and Torque Drive.
- Remove the jackstands and carefully lower the vehicle. Immediately add the proper amount of DEXRON®II automatic transmission fluid through the dipstick tube.
- Start the engine in PARK and let it idle. Do not race the engine. Shift into each shift lever position, shift back into PARK, and check the fluid level on the dipstick. The level should be 1 / 4 in. below ADD. Be very careful not to overfill. Recheck the level after the car has been driven long enough to thoroughly warm up the transmission. Add fluid as necessary. The level should then be at (NOT above) FULL.