02 Yukon Denali Won't Start

[Ninegrand]

It starts rev's up to about 1200 rpm then dies instantly. I changed the fuel pump and filter a week ago and its ran fine since. Once in a while when i was driving it the security light would come on. Its got fuel in the line, Not sure on the pressure though. I've searched the forum and believe it could possibly be the Passlock II, wondering how to reset it? I searched for the info but couldn't find it. The only thing that doesn't make sense is that the security light does not flash when it does it. If anobody else has any other idea's please let me know.

[ujtruck]

It starts rev's up to about 1200 rpm then dies instantly. I changed the fuel pump and filter a week ago and its ran fine since. Once in a while when i was driving it the security light would come on. Its got fuel in the line, Not sure on the pressure though. I've searched the forum and believe it could possibly be the Passlock II, wondering how to reset it? I searched for the info but couldn't find it. The only thing that doesn't make sense is that the security light does not flash when it does it. If anobody else has any other idea's please let me know.

 

You have to see a GM dealer and reprogramm your keys; If you know that keys are good, check the connector on steering column, white, yellow, black wires - small gauge; I asume this truck is not stolen one