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.
Body Control Module Programming and Setup: Introduction
The procedures below are designed to set-up the body control module (BCM) correctly during BCM related service. Before you start, read these procedures carefully and completely.
Body Control Module (BCM) Replacement or Reprogramming
If the body control module (BCM) is replaced or reprogrammed, the following procedures must be performed in the following order:
- Programming the BCM.
- Programming Immobilizer System Components, if equipped with Passlock System.
Inflatable Restraint Sensing and Diagnostic Module (SDM) Replacement
If the sensing and diagnostic module (SDM) is replaced, the following procedures must be performed in the following order:
- Programming the BCM.
- Programming Immobilizer System Components, if equipped with Passlock System.
Passlock™ Sensor Replacement
If the Passlock™ Sensor is replaced perform the Learn Procedure. Refer to Programming Immobilizer System Components .
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:
- • 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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