GM ignition key readers

[Ron Tyler]

Craig,

          Just resistors. There are 15 possibilities and they range from
400 ohms to almost 12K ohms.

 
       Later, rt


Craig Pugsley wrote:
> 
> Hi there..
> 
> A quick question.. (not really efi, but still on car electronics).
> Do the GM car keys with electronics inside them that the ECU talks to
> still just use resistors inside the key or have they changed to something
> more secure (ie something electronic in the key)?
> 
> If so, when did they change?
> 
> Cheers,
> Craig.
> pugsley at trl.oz.au
> http://www.3rotor.com/rotary/INDEX.HTM