I saw MongoosePro GMII cheaply from the manufacturer Drew. It was easy to set up and I used the same GM programming and diagnostic tools used at GM dealerships. I mostly have dealer tools in the palm of my hand. When I first went to the GM website I found it a bit confusing. I called Draw tech support and had to leave a voice message but they called back and really helped me to know what to expect and how to get up and running quickly. Overall the tool is cheaper as it doesn't cover much on warranty cars but I don't see cars until they are a few years old. It's easy to use, well maintained, and works with GM diagnostics and programming. I recommend this remedy.
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