gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Catalytic Converter Replacement (Gas, Below 8600 Lb (GVWR))|Page 4842 > < Catalytic Converter Replacement (Gas, Below 8600 Lb (GVWR))|Page 4840
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Catalytic Converter: Service and Repair
Catalytic Converter Replacement (Gas, Export)

REMOVAL PROCEDURE

1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Remove the nuts from the Y-pipe flat flange.
3. Remove the muffler and the catalytic converter assembly.

4. Remove the nuts, studs, and flange seals from the Y-pipe and the exhaust manifold.

INSTALLATION PROCEDURE

1. Install the new flange seals.

NOTICE:  Refer to Fastener Notice in Service Precautions.

2. Install the new studs.

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Tighten the studs to 22 Nm (16 ft. lbs.).

3. Install the new nuts connecting the Y-pipe, catalytic converter assembly to the exhaust manifold.

Catalytic Converter Replacement (Gas, Below 8600 Lb (GVWR))|Page 4842 > < Catalytic Converter Replacement (Gas, Below 8600 Lb (GVWR))|Page 4840