For 1990-2009 cars

1. Remove the case fluid passage seal (89).
2. Install a NEW case fluid passage seal (89) into the transmission case assembly.
3. Apply a 3 mm (1/8 in) bead of sealant GM P/N 89020326 (Canadian P/N 89021188) on the inside of the bolt holes of the scaling flange of the torque converter housing assembly.
4. Install the torque converter housing assembly to the transmission case assembly.
5. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953499), to the threads of all the torque converter housing bolts.
6. Install the 12 - M8 x 1.25 x 30 mm bolts (4) and hand tighten.
7. Install the 1 - M8 x 1.25 x 30 mm bolt/studs (3) and hand tighten.
8. Install the 2 - M8 x 1.25 x 35 mm bolts (6) and hand tighten.
9. Install the 1 - M8 x 1.25 x 45 mm bolt (7) and hand tighten.
10. Install the 1 - M8 x 1.25 x 30 mm TORX 40 bolt (8) and hand tighten.

Caution: Refer to Fastener Caution in the Preface section.

11. Tighten the 17 torque converter housing bolts in sequence and tighten to 29 N·m (21 lb ft).