Heres the deal. 92 z28 was running great. Started up every time. All the sudden sometimes it will not start and the security light pops up. Usually it flashes then disappears. Ive thought it was the starter before I figured out it was the security. Then I thought maybe the tumbler was wore out. I havent done anything yet because I cant pin point the problem. Did a flash test and got a code 46. That would be the vats. After so long do these vats security systens tend to just malfunction. What can be done to fix this killer problem. Ive seen bypassing and chips. Im running in circles and late to work! thanks

 

a new ignition cyliner and keys should fix the problem.

 

I hope thats it! Thanks

 

I hope thats it! Thanks.........Other suggestions

 

You can purchase an aftermarket chip and specify vats to be deleted. That's what I did. Purchased the chip from TBI CHIPS
They also sell tpi chips..if you're wondering.

 

my dad and i actually are having the same problem we just purchased a new key and ignition cylinder that should deffinitly fix the problem

 

If the tumbler was wore out, the key probably wouldn't turn in the cylinder. First take some rubbing alcohol and clean the resister pellet real good. Worth a shot before you go and replace the cylinder.

 

SOME ONE HELP ME!!!!!!!!!!!!!!!! MY 91 Z28 IS DOING THE SAME THING BUT I HAVE A NEW ING AND KEY TELL ME WHAT I HAVE TO DO NEXT. THE ING IS THE SAME ONE THAT COMES WITH THE CAR STOCK BUT IT IS A NEW ONE NOW IT WAS DOING IT BEFORE I CHINGEED IT AND IT STELL DOES IT NOW . SOME TIMES IT STARTS AND SOME TIME IT DONT IT IS GETING OLD NO ONE CAN HELP ME SO FOR MAYBE YAL CAN. SEND ME A REPLY OR CALL ME AT( 832) 385-6686 ANY TIME .THANK YOU FOR ALL YALLS HELP

 

So like i said my dad and i bought the new ignition cylinder that turned out to be the problem becuase as you turn your key in the ignition their are 2 wires that hook up and turn inside their casing and sometimes break that was what was wrong with my dads car