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 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE

Serial Data Gateway Module Replacement (HP2)

Fig 1: View Of Auxiliary Body Control Module

Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedures:
Remove the inflatable restraint module. Refer to Instrument Panel Inflatable Restraint Module Replacement .

Serial Data Gateway Module Assembly

Procedure

Press on the tabs to release the serial data gateway module.
Disconnect the electrical connectors.
Reprogram the serial data gateway module if replaced. Refer to Control Module References .

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.

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