Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2009 Hummer H3 AlphaFACTORY OEM SERVICE PROCEDURE

Installation Procedure

Fig 1: Integral Air Cleaner Housing Bolts

Courtesy of GENERAL MOTORS CORP.

Install the air cleaner housing (1) to the vehicle.

CAUTION: Refer to Fastener Caution .

Tighten the integral air cleaner housing bolts (2) to 15 N.m (11 lb ft).

Fig 2: Engine Wiring Harness Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Connect the engine wiring harness electrical connector (1) to the MAF/IAT sensor.
Install the air cleaner outlet duct to the air cleaner. Refer to Air Cleaner Resonator Outlet Duct Replacement .

Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.