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88 GTA, VAT?????

Old Aug 9, 2014 | 10:05 PM
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88 GTA, VAT?????

Need some help..... First the particulars... 88 Trans Am GTA, 5.0 TPI, M5 trans. The problem I am having is that when I turn the key to the start position I get nothing. I have power coming out of the ignition switch, but no power to the Clutch switch on its way to the starter solenoid.

After reading a lot of posts I have determined that I most likely have an issue with the VAT system. That being said, I have noticed that the "security" light on the dash does not illuminate at any point. Additionally the posts I have read all say that the VAT relay is located behind the driver's kick panel. I have removed the kick panel but the only relay there is for the power windows....??

Any help you could provide would be GREATLY appreciated!!!!
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Old Aug 10, 2014 | 11:19 AM
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Re: 88 GTA, VAT?????

OK..... I have found the relay.... it is getting power to the yellow wire from the ignition switch when the key is turned to start, but nothing coming out.... is it possible to bypass the relay until I can get one ordered??
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Old Aug 10, 2014 | 04:23 PM
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From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: 88 GTA, VAT?????

don't start hacking the car up over a 10 buck part
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Old Aug 10, 2014 | 04:40 PM
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From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 88 GTA, VAT?????

You can jump the relay like this =

Heavy gage wire with spade connectors from each outside heavy wire.

I used a zip tie around it from top to bottom and then taped it to make sure the jumper stayed in.

It is a very common way to eliminate VATS control over the starter, and is mandatory when removing VATS from the EPROM/ECM.

This is not my car but is the only photo I could find online.



Last edited by Ron U.S.M.C.; Aug 10, 2014 at 04:54 PM.
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Old Aug 10, 2014 | 05:37 PM
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Re: 88 GTA, VAT?????

Originally Posted by Ron U.S.M.C.
You can jump the relay like this =

Heavy gage wire with spade connectors from each outside heavy wire.

I used a zip tie around it from top to bottom and then taped it to make sure the jumper stayed in.

It is a very common way to eliminate VATS control over the starter, and is mandatory when removing VATS from the EPROM/ECM.

This is not my car but is the only photo I could find online.


Works to get the starter spinning.... but car still wont start due to the computer not getting the correct voltage... thanks though...
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Old Aug 10, 2014 | 05:38 PM
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Re: 88 GTA, VAT?????

Originally Posted by jamon8
don't start hacking the car up over a 10 buck part
Really!?!?!? That's all you got?

Thanks <--- Sarcasm...
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Old Aug 10, 2014 | 10:56 PM
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From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: 88 GTA, VAT?????

So are you going to use the resistor technique using your key pellet as a guide ?

Worked for me for a while.

I eventually had to have VATS eliminated.
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Old Aug 14, 2014 | 02:29 PM
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Re: 88 GTA, VAT?????

Originally Posted by Ron U.S.M.C.
So are you going to use the resistor technique using your key pellet as a guide ?

Worked for me for a while.

I eventually had to have VATS eliminated.

Replaced the relay but had the same problem, so I did the resistor technique and all is well now. Going to get the PROM done and replaced soon....
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