[rkencline]

my silverado 2500 hd fires off for a couple seconds and then shuts down. also will not connect with a code reader. has 60 lbs. of fuel pressure at the rail. every one says it is the ignition switch. can't remove the lock cylinder going through the little hole in the top of it , it will not release. any advice on how this is done? seems so simple, but i just can't get it to release !

 

[ASTE25]

This may help:

 

[99LS1500]

I replaced my ignition lock cylinder and the old 1 was a bit stubborn releasing too. You have to insert a small screwdriver in the little hole with your left hand while twisting and pulling the rim of the lock cylinder with your right hand.

 

[GMT604]

It won't connect to your code reader because the 15A CIG LTR fuse under the hood is blown.