Car won't start. Problem started with a light clicking noise and got louder over 3 days. Started loosing power while accelerating and the car didn't want to leave 1st gear. After a few seconds of 1st gear holding high rpms it would shift up into 2nd but still with a light pedal (not very responsive). Car just shut off at 50mph, was able to start it once after this and has not started since. Any ideas?

SOURCE: Shifting from 2nd gear

transmission shift solenoid rockauto.com is a cheap place to get an oem part

SOURCE: 2005 Pontiac Vibe having trouble shifting 1st 2nd code P2716 MIL

This is most likely due to a bad solenoid pack in transmission. You could have tranny serviced and see if it helps. Poor fluid condition makes valves stick in those.

SOURCE: 1993 pontiac bonneville won't start when security light is on

Here is a detailed write-up on how to bypass the entire VATS security system yourself.
http://newrockies.ca/vatsbypass This is what saved my car and my money (that I didn't have!).

SOURCE: I have a 97 grand prix gtp that will start but wont hold an idl

bad fuel pump.- just replace it and your good to go!

SOURCE: when accelerating my car doesnt shift into gear

Check the trans. fluid to see if it's on the full mark.