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 H2 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Body Control Module Replacement
BODY CONTROL MODULE REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the battery cable.
2. Remove the drivers side knee bolster and insulator.
3. Reach under the I/P and disconnect electrical connection for body control module (1).
4. Slide the body control module from the body control module bracket.
INSTALLATION PROCEDURE
1. Into the body control module bracket until it clicks into place.
2. Connect the electrical connectors to the body control module.
3. Install the drivers side insulator.
4. Connect the battery negative cables.
5. Setup the Body Control Modules customized options.
REMOVAL PROCEDURE
1. Disconnect the battery cable.
2. Remove the drivers side knee bolster and insulator.
3. Reach under the I/P and disconnect electrical connection for body control module (1).
4. Slide the body control module from the body control module bracket.
INSTALLATION PROCEDURE
1. Into the body control module bracket until it clicks into place.
2. Connect the electrical connectors to the body control module.
3. Install the drivers side insulator.
4. Connect the battery negative cables.
5. Setup the Body Control Modules customized options.
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.