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Home >> Hummer >> 2008 >> H3 V8-5.3L >> Repair and Diagnosis >> Powertrain Management >> Emission Control Systems >> Catalytic Converter >> Catalyst Shield >> Service and Repair >> Catalytic Converter Heat Shield Replacement
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Catalytic Converter Heat Shield Replacement



Catalytic Converter Heat Shield Replacement

Removal Procedure
Caution: Refer to Exhaust Service Caution (Exhaust Service Caution) .
Caution: Refer to Protective Goggles and Glove Caution (Protective Goggles and Glove Caution) .





1. If equipped with a 3.7L engine, remove the catalytic converter. Refer to Catalytic Converter Replacement (LLR) () .
2. If equipped with a 5.3L engine, remove the catalytic converters. Refer to Catalytic Converter Replacement - Left Side (LH8) (Catalytic Converter Replacement - Left Side) and/or Catalytic Converter Replacement - Right Side (LH8) (Catalytic Converter Replacement - Right Side) .
3. Remove the catalytic converter heat shield nuts (2) and shield (1).




4. If equipped with a 5.3L engine, remove the catalytic converter heat shield nuts (2) and shield (1).



Installation Procedure






Notice: Refer to Fastener Notice (Fastener Notice) .

1. If equipped with a 5.3L engine, position the catalytic converter heat shield (1) to the underbody and install the nuts (2).

Tighten the nuts to 9 N.m (80 lb in).





2. Position the catalytic converter heat shield (1) to the underbody and install the nuts (2).

Tighten the nuts to 9 N.m (80 lb in).

3. If equipped with a 5.3L engine, install the catalytic converters. Refer to Catalytic Converter Replacement - Left Side (LH8) (Catalytic Converter Replacement - Left Side) and/or Catalytic Converter Replacement - Right Side (LH8) (Catalytic Converter Replacement - Right Side) .
4. If equipped with a 3.7L engine, install the catalytic converter. Refer to Catalytic Converter Replacement (LLR) () .