RE: VATS

["Guenther,Max [ASCO/PA]" <Mguenther@ASCO.COM>]

	Check the ECMguy's page, he has a whole prom from a 90/91 (same
car)vette totally commented.
	By the way, the key resistance goes into the CCM(?) in the 91 vette
and that sends the frequency to your ECM.  The tolerances seem to be very
wide for the expected frequency input though, 33-60 hz I think.  
	I'm putting a '90 vette tpi into a 75 vette.  Good luck.

	Max

	PS. I would like to thank the ECM guy in a BIG way. 

> > I have an 81 Corvette that I have installed 91 Vette TPI parts into.
> > This was a small budget project so I found one part from one junk yard
> > and another from somewhere else.  I have an GM ECM 1227727 which came
> > from a yard back east.  Now that I am installing it I believe the
> Vehicle
> > Anti-Theft Security (VATS) has locked me out.  The wiring harness and
> > computer didn't come with a key.  I have see third party PROMS that have
> > the VATS disabled, but they are usually very expensive.  I would like to
> > either find the desired resistance value in the PROM or reset the PROM
> to
> > expect zero resistance.
> > Keith
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