GM BCM Body Control Module LBZ LMM Silverado

Commonly used for body functions such as tow haul mode, reverse light output etc

Comes with BCM plugs and some pigtail wiring 

Listing includes free freight in Australia 

This guide is a reference for those wanting to add tow haul or reverse light functionality to a converted Duramax/allison vehicle. The information shown in this guide is provided to you to help in the installation process and all care should be taken to ensure wiring is correct. SCP is not liable for any issues that may arise from the installation and wiring information contained in this guide.

CONNECTOR C1

This connector only has a couple of wires that need to be connected.

CONNECTOR C2

This connector has the following connections that need to be made

For the purposes of adding a BCM to a vehicle that did not have one wired in during the initial conversion Class 2 Serial Data can be found on the OBD Plug. Class 2 Pin 2

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Connector C3

Only a couple connections that needs to be made on this connector, it’s a momentary ground signal for the BCM to send a tow haul mode request to the TCM.

Connector C4

This connector has some of the ignition circuits that need to be connected to wake the BCM.

Reverse Lamp – Yellow cable in Patrol harness to reverse lights

Connector C5