GM Service Manual Online
For 1990-2009 cars only

Fastener Tightening Specifications Pontiac/Buick

Application

N·m

Lb Ft

Lb In.

Clamp Nut

50

37

--

Exhaust Crossover Pipe Mounting Bolts

25

18

--

Exhaust Pipe Front Heat Shield Nut

10

--

88

Front Exhaust Pipe-to-Manifold Nuts

35

26

--

Three Way Catalytic Converter-to-Intermediate Pipe Bolt

45

33

--

Tailpipe Clamp Nuts

35

26

--

Fastener Tightening Specifications Chevrolet/Oldsmobile

Application

N·m

Lb Ft

Lb In.

Clamp Nut

50

37

--

Engine Crossover Mounting Bolts (3100)

25

18

--

Engine Crossover Pipe Nut (3.4L)

25

18

--

Exhaust Hangers to Muffler Bolt

20

15

--

Exhaust Pipe Front Heat Shield Nut

10

--

89

Exhaust Pipe Heat Shield Bolt

10

--

89

Front Exhaust Pipe-to-Manifold Bolts

32

24

--

Muffler Heat Shield Bolt

12

--

107

Three Way Catalytic Converter Heat Shield Bolt

2

--

18

Three Way Catalytic Converter Heat Shield Nut

2

--

18

Three Way Catalytic Converter-to-Intermediate Pipe Bolt

47

35

--