Hummer H3. Manual — part 99
Fig. 61: View Of Engine Wiring Harness Bracket
Courtesy of GENERAL MOTORS CORP.
15. Remove the remaining lower engine wiring harness bracket bolt. Remove the bracket from
the engine compartment through the wheelhouse opening.
2006 Hummer H3
2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
Fig. 62: View Of Intake Manifold
Courtesy of GENERAL MOTORS CORP.
16. Remove the intake manifold bolts.
17. Lower the vehicle.
18. Remove the intake manifold from the cylinder head.
19. Remove and discard the seal from the intake manifold.
20. Mask off the open ports to the cylinder head, in order to prevent foreign objects from
entering the engine.
21. Clean and inspect the intake manifold. Refer to Intake Manifold Cleaning and
Inspection.
Installation Procedure
1. Remove the masking from the cylinder head and ensure the sealing surface is clean and dry.
2006 Hummer H3
2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
2. Install a NEW seal into the intake manifold groove.
Fig. 63: View Of Intake Manifold
Courtesy of GENERAL MOTORS CORP.
3. Position the intake manifold to the cylinder head.
4. Raise and support the vehicle only high enough to access the following components through
the wheelhouse. Refer to Lifting and Jacking the Vehicle in General Information:
The intake manifold bolts
The engine wiring harness bracket bolts
The wiring harnesses
5. Install the intake manifold bolts.
NOTE:
Refer to Fastener Notice in Cautions and Notices.
2006 Hummer H3
2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
Tighten: Tighten the bolts from the inside working outward to 10 N.m (89 lb in).
Fig. 64: View Of Engine Wiring Harness Bracket
Courtesy of GENERAL MOTORS CORP.
6. Position the engine wiring harness bracket to the engine and harnesses.
7. Install the engine wiring harness bracket bolts.
Tighten: Tighten the bolts to 10 N.m (89 lb in).
2006 Hummer H3
2006 ENGINE Engine Mechanical - 3.5L (L52) - H3
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