GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Catalytic Converter-to-Exhaust Manifold Bolt/Nut (LZ4/LZ9)

31 N·m

23 lb ft

Exhaust Manifold Bolt (LZ4/LZ9)

20 N·m

15 lb ft

Exhaust Manifold Brace Bolt (L61)

25 N·m

18 lb ft

Exhaust Manifold Heat Shield Bolt (L61)

23 N·m

17 lb ft

Exhaust Manifold Heat Shield Bolt (LZ4/LZ9)

10 N·m

89 lb in

Exhaust Manifold Nut (L61)

14 N·m

10 lb ft

Exhaust Manifold Pipe-to-Muffler Nut (L61)

30 N·m

22 lb ft

Exhaust Manifold Pipe Nut (L61)

35 N·m

26 lb ft

Exhaust Pipe Heat Shield Nut

10 N·m

89 lb in

Heater Oxygen Sensor

42 N·m

31 lb ft

Heat Shield Nut

10 N·m

89 lb in

Left Catalytic Converter-to-Exhaust Manifold Nut (LZ4/LZ9)

31 N·m

23 lb ft

Left Catalytic Converter-to-Right Catalytic Converter Nut (LZ4/LZ9)

31 N·m

23 lb ft

Rear Catalytic Converter-to-Muffler Nut

30 N·m

22 lb ft