GMLAN Serial Data Line

The GMLAN serial data communications circuit used 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 following modules communicate on the GMLAN serial data circuit:

• The transmission control module (TCM), (LY7) 3.6-L
• The engine control module (ECM), (LY7) 3.6-L