GM Camaro/Firebird 1993-1998 Repair Guide

Extension Housing Seal (in Vehicle)



See Figure 1

This seal controls transmission oil leakage around the driveshaft. Continued failure of this seal usually indicates a worn output shaft bushing. If so, there will be signs of the same wear on the driveshaft where it contacts the seal and bushing. The seal is available and is fairly simple to install, with the proper tool.

  1. Raise and safely support rear of the vehicle to minimize transmission oil loss when the driveshaft is removed.
  3. Unbolt the driveshaft from the differential and center support bearing, if equipped. Wrap tape around the bearing cups to keep them in place on the universal joint and slide the shaft out of the transmission.
  5. Use a small pry tool to carefully pry out the old seal. Be careful not to insert the tool too far into the housing or the bushing will be damaged.

Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the extension housing oil seal

To install
  1. Use extension oil seal installation tool J 21426 and a universal driver handle to evenly drive the new seal into the housing. Make sure the tool only contacts the outer metal portion of the seal.
  3. Install the driveshaft. Tighten the universal bearing cup retainer bolts to 15 ft. lbs. (20 Nm). Recheck fluid level.
  5. Carefully lower the vehicle.