GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide

Manual Transaxle



Under normal conditions, the lubricant used in the manual transaxle does not require periodic changing. The fluid level in the transaxle should be checked every 12 months or 7500 miles (12,000 km), whichever comes first. The manual transaxle is designed for use with Dexron®III automatic transmission. Don't use standard manual transmission lubricant in the transaxle.


See Figures 1 and 2

  1. Park the car on a level surface. Before proceeding, the transaxle case must be cool to the touch. Due to the expansion characteristics of the Dexron®III fluid, it will be above the level of the filler plug when the transmission is hot. On your HM-282 manual 5 speeds, there is a dipstick.
  3. The dipstick type can be removed in the same manner as an oil dipstick. On the drain plug type, slowly remove the filler plug from the driver's side of the transaxle (see the illustration). The lubricant level should be right at the bottom of the filler plug hole. If the fluid trickles out as the plug is removed, or if you can just touch the fluid through the filler plug hole, the level is correct.

Click image to see an enlarged view

Fig. Fig. 1: Some manual transaxles have a dipstick to check the fluid level

Click image to see an enlarged view

Fig. Fig. 2: Most models use a filler plug to fill and check the fluid level on a manual transaxle

  1. If you cannot feel the fluid level with your finger through the filler plug hole, add Dexron®III automatic transmission through the hole until the fluid begins to trickle out of the hole.
  3. When the level is correct, install the filler plug and tighten it snugly.


  1. Park the car on a level surface, turn OFF engine and apply the parking brake.
  3. Place a container of adequate capacity beneath the drain plug which is located underneath the car, on the bottom of the transaxle housing.
  5. Use the proper size wrench to loosen the drain plug slowly, while maintaining a slight upward pressure, to keep the oil from leaking out around the plug.
  7. Allow all of the lubricant to drain from the transaxle, then clean the plug area thoroughly. Install the drain plug and gasket (if so equipped).
  9. Remove the transaxle dipstick and add slowly checking the level often. Do not overfill.
  11. Check the oil level as outlined above.