GM Service Manual Online
For 1990-2009 cars only

Fastener Tightening Specifications Gasoline Engines

Application

Specification

Metric

English

Catalytic Converter-to-Exhaust Manifold Nuts

40 N·m

30 lb ft

Catalytic Converter-to-Underbody Shield

2.5 N·m

22 lb in

Exhaust Front Pipe-to-Catalytic Converter Nuts

40 N·m

30 lb ft

Exhaust Front Pipe-to-Front Muffler

30 N·m

22 lb ft

Exhaust Manifold Cover Bolts

15 N·m

11 lb ft

Front Bracket-to-Cylinder Block Bolt

50 N·m

37 lb ft

Front Muffler-to-Rear Muffler Nuts

30 N·m

22 lb ft

Front Muffler-to-Underbody Shield

2.5 N·m

22 lb in

Rear Muffler-to-Underbody Shield

2.5 N·m

22 lb in

Fastener Tightening Specifications 2.0L Diesel

Application

Specification

Metric

English

DPF Heat Shield Retaining Nut

2.5 N·m

22.1 lb in

Exhaust Front Pipe Nuts

40 N·m

29.5 lb ft

Exhaust Manifold Heat Shield Nut and Bolt

20 N·m

14.8 lb ft

Front Muffler Heat Shield Retaining Nut

2.5 N·m

22.1 lb in

Front Muffler-to-Rear Muffler Nut

40 N·m

29.5 lb ft

Pre-Catalyst Bracket Bolt

40 N·m

29.5 lb ft

Rear Muffler Heat Shield Retaining Nut

2.5 N·m

22.1 lb ft

Rear Muffler-to-Front Muffler Nut

40 N·m

29.5 lb ft