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.
2008 Hummer H3 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Headlamp Control Module Scan Tool Information (Module ID Information)
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Module ID Information
| Parameter | System State | Expected Value | Definition |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| Base Model Part Number | - | Numeric | This displays the part number of the module hardware only. |
| Calibration Part Number | - | Numeric | This displays the part number of the module calibration. |
| Component Serial No. 13-16 | - | Numeric | This is the third partition of the serial number. |
| End Model Part Number | - | Numeric | This displays the part number of the module with software. |
| Julian Date of Build | - | Numeric | This displays the day of the year the module was built. |
| Software Part Number | - | Numeric | This displays the part number of the software currently installed in the module. |
| Year Module Built | - | Numeric | This displays the year the module was built. |
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.