Data Link Connector (DLC)
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The data link connector (DLC) is a standardized 16-cavity connector. The DLC low speed serial data circuit is connected directly to the instrument panel (I/P) splice then to all other splices or modules. Connector design and location is dictated by an industry wide standard, and is required to provide the following:
- Pin 1 GMLAN low speed communications terminal
- Pin 4 scan tool power ground terminal
- Pin 5 common signal ground terminal
- Pin 6 high speed GMLAN serial data bus (+) terminal
- Pin 14 high speed GMLAN serial data bus (-) terminal
- Pin 16 scan tool power, battery positive voltage terminal