Hummer H2. Manual — part 1900

Fig. 20: Exhaust Manifold Pipe Nuts (Right)
Courtesy of GENERAL MOTORS CORP.

6. Remove the right exhaust manifold pipe nuts.

2004 Hummer H2

2004 ENGINE Engine Exhaust - Hummer H2

Fig. 21: Exhaust Manifold Pipe Nuts (Left)
Courtesy of GENERAL MOTORS CORP.

7. Remove the left exhaust manifold pipe nuts.

8. Remove the exhaust hanger mounting bracket bolts.

9. Lower the catalytic converter or exhaust manifold pipe using the adjustable jackstands.

2004 Hummer H2

2004 ENGINE Engine Exhaust - Hummer H2

10. Remove the exhaust manifold pipe seal(s).

Installation Procedure

Fig. 22: Exhaust Manifold Pipe Nuts (Left)
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2

2004 ENGINE Engine Exhaust - Hummer H2

1. Install the exhaust manifold pipe seal(s).

2. Raise the catalytic converter or exhaust manifold pipe using the adjustable jackstands.

3. Install the exhaust hanger mounting bracket bolts.

4. Install the left exhaust manifold pipe nuts.

Tighten:

z

Tighten the transmission bolts to 100 N.m (74 lb ft).

z

Tighten the exhaust pipe hanger bracket bolts to 12 N.m (106 lb in).

z

Tighten the exhaust manifold pipe nuts to 50 N.m (39 lb ft).

Fig. 23: Exhaust Manifold Pipe Nuts
Courtesy of GENERAL MOTORS CORP.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE Engine Exhaust - Hummer H2