Flywheel /Flex Plate Torque

Fig 1: Identifying Engine Flywheel Bolts Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

Tighten 

1. 4.1. Tighten the engine flywheel bolts first pass in sequence to 20 N.m (15 lb ft).
2. 4.2. Tighten the engine flywheel bolts second pass in sequence to 50 N.m (37 lb ft).
3. 4.3. Tighten the engine flywheel bolts final pass in sequence to 100 N.m (74 lb ft).