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: Testing and Inspection
This is the exact OEM manual section for the path above. Use the breadcrumb to move up or down the tree until you reach the precise year, make, model, and subsystem you need.
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 2007 Chevrolet.
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.
Important: The following procedures must be followed:
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:
1. Programming the BCM.
2. 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:
1. Programming the BCM.
2. Programming Immobilizer System Components, if equipped with Passlock System.
Passlock(TM) Sensor Replacement
If the Passlock(TM) Sensor is replaced perform the Learn Procedure. Refer to Programming Immobilizer System Components. Programming and Relearning
Programming the BCM
Important: After the procedure is completed, the personalization settings of the BCM are set to a default setting. Inform the customer that the personalization must be set again.
Perform the BCM special function "Request BCM Info. for SPS", then connect the scan tool to the SPS terminal and follow the instructions on the screen. Refer to Service Programming System (SPS). Programming and Relearning
Programming Immobilizer System Components
Perform the Learn Procedure. Refer to Programming Immobilizer System Components. If the Learn Procedure is not performed after a BCM replacement, one of the following conditions will occur:
* The vehicle will not be protected against vehicle theft by the PASSLOCK system.
* The engine will not crank or start. Programming and Relearning
Important: After programming, perform the following to avoid future misdiagnosis:
1. Turn the ignition OFF for 10 seconds.
2. Connect the scan tool to the data link connector.
3. Turn the ignition ON, with the engine OFF.
4. Use the scan tool in order to retrieve history DTCs from all modules.
5. Clear all history DTCs.
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.