computer connector to blazer
If you are talking about the diagnostic link connector. most parts stores carry scan tools for your vehicle. If you are looking to read the codes, then the scan tool that most GM shops use is called a TECH2 and is used to communicate with the various modules in the vehicle. The one that you can get at a parts store can do most of the same things depending on the cost and model. When a tech connects a laptop, they do it through the TECH2 interface and the software is proprietary(GM only) used for reprogramming modules and diagnostics. Hope this helps.
