A lot of people have asked us what the EPROM numbers are for GM chips. The stock chips have GM house numbers so it becomes a bit of a mistery.

We now have a page with some cross references that may be of interest.

See: http://xtronics.com/memory/GM-eprom.htm

 

That looks like it was lifted right off someones website

 

The info was provided to us by Tunnercat as a spread sheet - If I knew he already had a web page we wouldn't have bothered. The idea is to cut down on phone calls asking what EPROM type is in a paticular car -- something we are not experts on.

I would really like to expand the table to provide a cross reference of the GM house numbers on GM EPROMs - if anyone has them please send them this way.

 

What would be really nice is to have a cross reference to the numbers that are actually inscribed on top of the EPROMs so that the right pulse pattern and voltage can be applied. The GM chip numbers that I've seen in Australia don't even show up in Google searches.

John

 

I'll link it up thru the "Tuning Guide" sticky above near the other broadcast code lookups and the like when I get a chance to later.

It sure seems like a nice little lookup chart to have, considering I dont always play with other ecms, least I can see what I need for it.

later
Jeremy

 

Yes, the inscribbed numbers are GM house numbers - I would like to have a refference.

There is no problem with the pulse pattrn - the problem is the Vpp or programming voltage, but you can always start off with a low voltage and work your way up with out harming the chip.