I have a 2000 Blazer 4x4

Im looking at putting an aftermarket remote start w/ alarm on.

I currently have the factory alarm equipped.

What bypass module, if any, am i going to need so everything works correctly?

Most likely a Python or viper remote start/ alarm

http://www.amazon.com/gp/product/B00386XMBC/ref=ox_sc_act_title_1?ie=UTF8&m=A32QR6D7S73KI