Thread: LT4 swap
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Old 09-07-2010, 03:28 PM   #8
6772owner
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Join Date: Jan 2008
Location: Colorado
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Re: LT4 swap

Ooooops, sorry I forgot to answer that part, yes VATS is the Vehicle Anit-Theft System. It wont allow the vehicle to run more than a few seconds without the proper "key" inserted into the ignition. The GM keys for these engines have a resistor built into them that has to be the proper value to "unlock" the VATS system. This is why when we swap them we have to defeat this feature to allow installation in our trucks.
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Last edited by 6772owner; 09-07-2010 at 03:28 PM. Reason: text
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