GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers 3.1L Engine

3.1L SPO

Application

GM SPO Group Number

Catalytic Converter Hanger

N.S.

Catalytic Converter Heat Shield

03.690

Catalytic Converter Support

03.690

Exhaust Crossover Pipe

03.609

Exhaust Crossover Pipe Heat Shield

03.616

Exhaust Muffler

03.701

Exhaust Muffler Intermediate Heat Shield

N.S.

Exhaust Muffler RR Bracket Hanger

03.704

Exhaust Pipe Front Heat Shield

03.616

Exhaust Pipe Hanger

03.616

Exhaust Pipe Heat Shield

03.616

Intermediate Pipe

03.609

Three Way Catalytic Converter

03.685

GM SPO Group Numbers 3.4L Engine

3.4L SPO

Application

GM SPO Group Number

Catalytic Converter Heat Shield

03.690

Exhaust Crossover Pipe

03.609

Exhaust Muffler

03.701

Exhaust Pipe Hanger

03.616

Exhaust Pipe Heat Shield

03.616

Exhaust Tail Pipe

03.705

Intermediate Pipe

03.609

Three Way Catalytic Converter

03.685

GM SPO Group Numbers 3.8L Engine

3.8L Engine SPO

Application

GM SPO Group Number

Catalytic Converter Heat Shield

03.690

Exhaust Crossover Pipe

03.609

Exhaust Manifold

03.601

Exhaust Manifold Heat Shield

03.602

Exhaust Manifold Shield

03.602

Exhaust Muffler

03.701

Exhaust Pipe Heat Shield

03.616

Intermediate Pipe

N.S.

Three Way Catalytic Converter

03.685