Class 2 Serial Data Link
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The class 2 serial data link allows these modules to communicate data with each other:
- Body Control Module (BCM)
- Electronic Brake Control Module (EBCM)
- Heads Up Display (HUD)
- HVAC Control Module (with CJ2)
- Inflatable Restraint Sensing Diagnostic Module (SDM)
- Instrument Panel Cluster (IPC)
- Memory Seat Module (MSM) (with A43)
- Powertrain Control Module (PCM) - 3.4L
- Radio
- Rear Seat Entertainment (RSE)
- Theft Deterrent Control Module
- Vehicle Communication Interface Module (VCIM)
- Devices on the auxiliary power drop connector
In addition, the class 2 serial data link allows a scan tool to communicate with these modules for diagnostic and testing purposes.