chinese CANdi modules.
http://www.obd2be.com/tech-2-candi-module-p-634.html
looks like theyve gone down even further in price. $99.
You might also consider buying an MDI... Its the replacement/successor to the Tech 2. Many of the newer GM vehicles that have mid-speed GMLAN, LIN, and MOST busses are not compatible with the Tech 2 and require you to use the MDI instead. (IE, most of the 2013+ GM cars, the 2010+ camaro, 2010+ equinox).
As for the 2014+ K2XX next gen trucks/SUV's...I dont know if those are compatible with Tech 2 or require MDI, but if they require MDI, I would just get an MDI instead of a Tech 2.
I love my Tech 2 though....its built like a rock/durable, its quick and easy to use and boots up in like 3 seconds. Compared to the MDI, you have to drag a [delicate] laptop around, you have to have clean hands (unless you want grease and shit on your laptop), you have to deal with Windows, wait for Windows to boot up, and its just clumsier because you are using a mouse to do everything rather than dedicated keys like with Tech 2.
Ill never get rid of my Tech 2 for that reason. Its just so easy/quick to use, you can drop it, use it with dirty hands, etc. But obviously if the K2XX trucks require MDI, Ill have to get an MDI......but I still prefer Tech 2.
ben