security light comes on and engine
starts normally but shuts down immediately
JA: Does the light flash, blink or stay solid? Have you tried to reset the security system?
Customer: light stays solid. how do I reset the secutity system
JA: What is the model/year of your Chevy?
Customer: 2004 Astrovan I call it various things.
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Have replaced Key cylinder and new harness down to where it plugs into it's receptacle under the dash. Sometime during this the security light came on. Yes I want to fix it myself..
JA: Anything else you think the mechanic should know?
Customer: nothing except the negative cable was disconnected before performing this as was prudent
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.