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.

2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Removal Procedure

IMPORTANT: Before cutting out a stationary window, apply a double layer of masking tape around the perimeter of the painted surfaces and the interior trim.

Open the hood.
Remove the window wiper arms. Refer to Wiper Arm Replacement in Wipers/Washer Systems.
Remove the window side reveal moldings from the vehicle. Refer to Windshield Side Reveal Molding Replacement .
Remove the cowl air inlet grille panel. Refer to Air Inlet Grille Panel Replacement - Non Functional in Exterior Trim.

CAUTION: If broken glass falls into the defroster outlets, it can be blown into the passenger compartment and cause personal injury.

Cover to protect the following parts from broken glass:
- The upper dash pad
- The defroster outlets and A/C outlets
- The seats and carpeting
Remove the rear view mirror. Refer to Rearview Mirror Replacement .

Fig 1: View Of Window Lower Supports

Courtesy of GENERAL MOTORS CORP.

Factory Service Tools

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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.