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.
Removal And Installation: Removal
If this Electronic Control Unit (ECU) is being replaced with a new unit, a diagnostic scan tool MUST be used to align the PROXI configuration data into the new ECU. Follow the routine outlined in the diagnostic scan tool for PROXI Configuration Alignment under Body Control Module (BCM) Miscellaneous Functions menu.
- Disconnect and isolate the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), disconnect the IBS connector first before disconnecting the negative battery cable.
- Remove the steering column opening cover. Refer to COVER, STEERING COLUMN OPENING, REMOVAL AND INSTALLATION
.
- Remove the DLC connector (1a), remove the screws (1b), nut (1c), the upper bracket bolt and remove the brackets (1d) from the Body Control Module (BCM).
- Disconnect the BCM wire harness connectors (1) on the front of the BCM.
- Using a suitable tool, release the retainer (1a) and then release the pin (1b) from the bracket (1c).
- Turn the BCM (2a), release the retainers (2b) and move the BCM to access the wire harness connectors on the back of the BCM.
- Disconnect the wire harness connectors (1) from the back of the BCM.
- Remove the BCM from the vehicle.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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