This isn't about Camaros (well, I suppose it could be about V6 powered Camaros), but I was curious as to how to get a bin file from a 94 S10 blazer. A friend of mine has one, but the flash reader program does not work on it (of course, since it is only suppose to be for LT1s). Anyways, I was curious if there were other programs out there to read this PCM, or does this require an EPROM reader because the trucks are still EPROM? I'm not sure if they are or not, but the truck has a OBD1 type connection under the dash. Anyone have any ideas? I really don't have a lot of knowledge about PCMs yet, I'm still learning. And all I know is about OBDI LT1 PCMs, not Chevy truck PCMs.

 

It depends what model PCM/ECM is in the truck but most likely it's the older style with a removable EEPROM which means you'd need an EEPROM programmer to read it.

 

I'm not sure what the 95ImpalaSS is talking about, it doesn't matter if it's an EEPROM or not when it comes to reading the computer. However, I can tell you that the software with your best chance to read it is going to be Diacom, by Rinda Technologies. I've used their software to read GM cars (all types, not just f-bodies) back to 1982. The software and cable comes together. The cable has various adapters so you can read ODBI and earlier cars. Take a look here:

http://216.230.203.183/auto/auto.htm

I've used it with 4,6 and 8 cylinder cars, SUVs and trucks. It's been very good.

-Ernest

 

He's not talking about scanning it, i.e. pulling codes, monitoring parameters, etc., he's talking about reading the contents of the program itself.

 

Yes, 95ImpalaSS has it right. I have plenty of programs to read the computer parameters. I would have like to have been able to just pull the info from the EPROM without having to pull the chip and put it in a reader. But it appears that I have to, however. Oh well, I was just hoping.

 

Oh, I'm a dummy, I didn't read that right. Apologies. I was thinking of just scanning.

Sorry, I'll go back to my room now...

-Ernest

 

Well, doesn't Tunercat allow you to do that?
It has plenty of modules to read different cars like trucks and stuff.
go to www.tunercat.com and click on supported ecms in their menu.

BTW, does the LT1 cable work on the other cars? That's what I was wondering. Also, if you have access to one of those cars (94-95s) could you take a look and check to see if the PCM connectors are the same?

Thanks.

 

Tunercat is strictly software, you need hardware to get the bin file out of the EEPROM chip, then TunerCat can let you modify it. Then you need a way to put it back into the EEPROM.

The OBDI cable will work with other GM cars (and some from Lotus), you just need the appropriate scanner software to use it. The diagnostic connector should be the same for all GM cars from the mid 80's to 95. I think some 95 models got the OBDII style connector but are still OBDI PCMs, but don't quote me on that.
TTS Datamaster has a pretty good list of supported cars going back to 1986.

 

Obviously this post has confused a few people, so let me be a bit clearer. I know all about what Tunercat can do, it's the program I'm using to do my editting. What I was hoping existed as a program, like the flash reader program that Tunercat has, that can read the INFORMATION from the PCM and turn it into a bin file (like the flash reader program does). All that great hex data that lets the computer run is what I want, not an editor or anything like that. I have the editor. I need to get the info from the PCM so I can use it in the editor. However, the only way to do this is to have a EPROM programmer, take the chip from the PCM, and use the programmer to get the information off the chip. I've already found out this is the only way to do it, because the EPROM chips can't be read any other way. I was hoping there would be an easier way than pulling the PCM out and popping it open to get the chip out, but that's what I have to do. So no one else needs to worry about this post, unless there is a program out there that will let me do exactly what I just said.