Data Link Connector (DLC)
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis 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