GMLAN Serial Data Line
WARNING: This page is about a different car, the 2006 Pontiac Torrent and 2006 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
The GMLAN serial data communications circuit on this vehicle is in a linear topology. The following modules are connected to the link, in order from DLC to the end of the linear configuration:
- The body control module (BCM)
- The vehicle communication interface module (VCIM)
- The electronic brake control module (EBCM)
- The transmission control module (TCM)
- The engine control module (ECM)
VCIM communicates functionally and physically on class 2 only. The high speed GMLAN circuits just pass through the module.