VATS wehicle security fix
SIDMAN
01-04-2007, 12:01 PM
I just wanted to post a fix i had on my 2000 chevy 3500 with a security light no start. When trying to start the truck, it would start every time for a second and then die. My fuel pressure was around 64psi but when i would crank it would start, then pressure would drop to say 58psi and then it would die. I thought the fuel pump was dying because i know i need around 60 psi to open injector poppets. Since it was dropping to 58psi i changed the fuel pump. It still didn't work. It worked exactly the same, ran for a second then died. I did notice my security light on so i put my old fuel pump back in, disconnected my battery, reconnected my battery after ten miniutes and the security light was no longer blinking and it started. YEAH!! I was just about to put a resistor in the ignition to fake out the module but i found for my fix all was needed was to reset the computer. This problem will probably come back but i will have my battery wrench with me. If it really creates a problem i will then bypass the VATS. but for all with the security light on and no start due to it, try disconnecting the battery, it worked for me.
Sidman
Sidman
Automotive Network, Inc., Copyright ©2025
