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VATS for '90 Seville

1284 Views 2 Replies 2 Participants Last post by  adrenalynn
I am trying to disable the VATS on my Seville so I can start my car. I searched the forum and sort of came up with a game plan that seems do-able. I took some advice from one poster and am going to try to apply it to my situation.

Hobnail said:
I just repaired my 97 Eldorado starting problem today. I choose to insert a resistor that matches the pellet value in my key. You can go to Radio Shack and purchase an inexpensive volt ohm meter and use it to measure your key pellet. Then purchase a resistor that matches the value. Use a 1/4 watt fixed resistor or if you cannot find the exact value then purchase a variable resistor trim pot and adjust it to match your key pellet value. I used a 10 turn trim pot adjusted to a 2.33 kilo ohm value. Someone at the store should be able to help you with this.

You will need to remove the cover under the steering column. Mine has a decor cover with a metal cover under it. Once you have all of that out of the way, :worship: locate the large multi-pin connector next to the column. Locate the 2 wire orange wire harness which should be in positions 12 and 13; they are the last two on that row. Positions 10 and 11 were empty on my wiring. Cut the orange wire harness about 3 inches from the large connector. Strip about 1/2 inch of insulation from the ends and solder or crimp the reistor so that it bridges between positions 12 and 13 on the large connector. The resistor should now be the only connection between 12 and 13, do not re-connect the wiring that goes to the ignition key switch. The engine should now start when you turn the key. Insulate and tie wrap the resistor. I tie wraped the resistor to some of the other wires to keep it from flopping around.

Your anit-theft system will no longer function but at least the engine will start.:D Good Luck!
I talked it over with my dad and he seems to think this is the best way to go.

My question is can you use the volt ohm meter to read the value of the key pellet or do you have to read the resistor in the ignition? I took my key to Radio Shack to have it read so I could get the resistor(s) I needed but the guy at the store was completely useless and refused to believe that anyone other than a "wiring engineer" could complete the task. So should I buy the volt ohm meter and try it from inside my car or should I be able to find out what the value is from the key?

Thanks in advance for any advice.
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You can get the value off the key. One probe on each side of resistor (pellet) contacts. If you take it to an Ace Hardware store they should have a fancy machine that will read the code if you don't have a DVM.

Also do a Yahoo or Google search for GM Vats. You should find all the information (including wiring diagrams) that you need.
Great, thanks. That should save me some money.:thumbsup:
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