1999 sonoma want idle
 

engine wants to die after it is started. security light comes on.

RE: 1999 sonoma want idle
 

You didn't give us much information like is it still drivable or how long it's been doing this but here's a place to start. The usual stuff first. Has it had a good tune up lately? How's the air and fuel filters? If those things are OK, suggest you check the computer for any codes. The computer knows all and it's a lot faster (and safer) then guessing.

Let us know,

Brad