HELP, I erased the flash in my PCM

[Marc Piccioni]

The quickest way abeit most expensive is to take the PCM to your local GM 
dealer and have them flash the unit in "bench mode".

----------
From: 	Beth Hempstead[SMTP:dave_hempstead at hp.com]
Sent: 	July 6, 1999 9:53 PM
To: 	gmecm; diy_efi; Dave
Subject: 	HELP, I erased the flash in my PCM

Please help me!!!

I wrote alot of complex code (with at least 1 bug in it) which successfully 
erased the flash in my '94 GM PCM, but did not successfully re-program it 
with new bits.  Therefore, I have a PCM which is dead.

I realize that I can unsolder the flash, reprogram them, and solder (or 
socket) them back in the PCM.

Is there any easier way to get the PCM back to listening to the ALDL????  I 
can easily open it up.

What do you experts do when they try to reflash a PCM, and you get a 
glitch, power failure, or some other error code.  I doubt that you throw it 
away.  How do you recover the PCM???


Any help will be GREATLY appreciated
Dave (boy do I feel stupid) Hempstead
(formerly) '94 Caprice PCM 16188051
<<File: ATT00001.html>>


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