Hummer H3. Manual — part 1169

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

Fig. 33: View Of Catalytic Converter Heat Shield At Floor Panel
Courtesy of GENERAL MOTORS CORP.

1. Position the catalytic converter heat shield to the floor panel studs.

2. Install the nuts securing the heat shield to the floor panel.

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

3. Remove the catalytic converter. Refer to Catalytic Converter Replacement.

EXHAUST MANIFOLD HEAT SHIELD REPLACEMENT

Removal Procedure

NOTE:

Refer to Fastener Notice .

CAUTION: Refer to Exhaust Service Caution .

CAUTION: Refer to Protective Goggles and Glove Caution .

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

Fig. 34: View Of Transmission Filler Tube & Bracket
Courtesy of GENERAL MOTORS CORP.

1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .

2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

3. If equipped with an automatic transmission, remove the transmission filler tube bracket nut

from the secondary air injection (AIR) adapter and position aside.

4. Remove the heated oxygen sensor (HO2S) from the exhaust manifold. Refer to Heated

Oxygen Sensor 1 Replacement .

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3

Fig. 35: View Of Exhaust Manifold Heat Shield
Courtesy of GENERAL MOTORS CORP.

5. Remove the nuts securing the heat shield to the exhaust manifold.

6. Remove the exhaust manifold heat shield.

Installation Procedure

2007 Hummer H3

2007 ENGINE Engine Exhaust - H3