Exhaust system of gasoline engine HFV6 3.2L Chevrolet Captiva 1

General description and operation of the exhaust system
Exhaust system Note: When you check or replace exhaust system components, make sure there is adequate clearance from all points on the underside of the body to...

Tightening torques for threaded connections
Tightening torques for threaded connections PROGRAM N·m lb-ft lb-in Catalytic Converter Pipe Top Flange Nuts 40 30 - Nuts for connecting the catalytic...

Arrangement of components of system of release of the fulfilled gases
1. Exhaust manifold, bank 1 2. Upstream oxygen sensor with electric heater, bank 1 3. Exhaust manifold, bank 2 4. Upstream oxygen sensor with electric heater,...

Diagnosis of the exhaust system
STATE Probable Cause elimination Exhaust leak Leaks at pipe connections. Tightening nuts and bolts to the specified torque. Damaged or incorrectly installed...

Catalytic converter
Removal procedure 1. Disconnect the negative battery cable. 2. Remove the front exhaust pipe. See «Silencer intake pipe» in this section. 3. Remove the nuts...

Silencer intake pipe
Removal procedure 1. Disconnect the negative battery cable. 2. Remove the bottom engine cover. 3. Disconnect the downstream heated oxygen sensor connector (2...

Underbody Catalytic Converter (UCC)
Removal procedure 1. Remove gasket and nuts (3 items) attaching the front muffler pipe to the catalytic converter on the bottom (UCC). 2. Remove the gasket and...

Front muffler
Removal procedure 1. Remove the gasket and nuts securing the front muffler pipe to the underbody catalytic converter (UCC). 2. Remove the gaskets and nuts...

Rear silencer
Removal procedure 1. Remove the gaskets and nuts securing both rear muffler pipe flanges to the front muffler pipe flange. 2. Disconnect both rear muffler...