Any publications on the current Gen-IV / LS1-based PCM?
Thread Starter
On The Tree
Joined: Feb 2002
Posts: 111
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From: Plano, TX
Any publications on the current Gen-IV / LS1-based PCM? I'd like to find a book with some serious info on the LS1 PCM. I have a set of service manuals, but I need to know more info; there's some stuff I've been dying to read about. Can anyone recommend a book/article/publication that explains operating conditions of the PCM better?
TECH Fanatic
Joined: Nov 2001
Posts: 1,190
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From: Las Cruces, NM
Re: Any publications on the current Gen-IV / LS1-based PCM? 
Teching In
Joined: Jun 2002
Posts: 26
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From: South
Re: Any publications on the current Gen-IV / LS1-based PCM? This may be some help depending on the type of info. you are looking for.
http://www.sae.org/servlets/productD...N_SUCCESS=TRUE
http://www.sae.org/servlets/productD...N_SUCCESS=TRUE
Thread Starter
On The Tree
Joined: Feb 2002
Posts: 111
Likes: 0
From: Plano, TX
Re: Any publications on the current Gen-IV / LS1-based PCM? Thanks for the help, but that's not exactly what I was looking for. I'll have to ask my service tech friends what they have available.
Launching!
Joined: May 2002
Posts: 203
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From: Podunk, VA
Re: Any publications on the current Gen-IV / LS1-based PCM? Imperator what exactly are you looking for? I was trying to find some information on the protocol for the PCM so I could talk to it thru some type of serial interface on a Palm...to try and "roll my own" diagnostic software... There is also an open source project doing the same thing. What are you trying to do?
Thread Starter
On The Tree
Joined: Feb 2002
Posts: 111
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From: Plano, TX
Re: Any publications on the current Gen-IV / LS1-based PCM? Good idea.. I'd be seriously interested in the Palm scan tool if that does become reality. In my case, I'm looking for a basic "breakdown" of the instruction set. I'd like to know what conditions need to be present to activate things, what the stock fuel/spark tables look like, when closed-loop/open-loop modes switch, differences among fuel tables, etc.
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TECH Resident
Joined: Jan 2002
Posts: 754
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From: USA
Re: Any publications on the current Gen-IV / LS1-based PCM? I use :
From SAE
1. SAE HS-3000 OBD-II standard,
explains protocols and what each command/byte does
From Jendham
1. OBD-II diag for 94-01 model years
2. GM engine performance
3. GM diag codes with serial and PID for 93-01 MYs
From SAE
1. SAE HS-3000 OBD-II standard,
explains protocols and what each command/byte does
From Jendham
1. OBD-II diag for 94-01 model years
2. GM engine performance
3. GM diag codes with serial and PID for 93-01 MYs
TECH Apprentice
Joined: Jan 2002
Posts: 384
Likes: 0
From: Murphy, TX
Re: Any publications on the current Gen-IV / LS1-based PCM? Are you looking for OBD-II crap or real live PCM info? Internal data structures and algorithms are not generally available. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
<small>[ July 02, 2002, 09:24 PM: Message edited by: ToplessTexan ]</small>
<small>[ July 02, 2002, 09:24 PM: Message edited by: ToplessTexan ]</small>
