Flywheel/Flex Plate Torque (4.8L, 5.3L & 6.0L)

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Tightening Sequence For Engine Flywheel Bolts

Courtesy of GENERAL MOTORS CORP.