PCM Question! Techies needed!!!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-15-2005, 09:06 PM   #1
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Default PCM Question! Techies needed!!!!

would a 95 Pontiac transport with teh L27 have the exact same PCM and such things as my 94 bonneville?


Reason is that i found PCM definitions (for my OBD scanning software) for a 95 transport that said it had an L27... they seem to have all the same sensors. I also have the option of a 95 Bonneville that was supposed to be for an L36 engine (is that possible?) This is all 8192 Baud stuff... no OBDII....
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Old 03-15-2005, 09:09 PM   #2
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yup the 95 Bonneville has the Series 2 N/A, and Series 1 */C with the Hybrid PCM
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Old 03-15-2005, 10:57 PM   #3
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Old 03-16-2005, 11:12 AM   #4
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Default Re: PCM Question! Techies needed!!!!

Quote:
Originally Posted by bmsgaffer86
would a 95 Pontiac transport with teh L27 have the exact same PCM and such things as my 94 bonneville?


Reason is that i found PCM definitions (for my OBD scanning software) for a 95 transport that said it had an L27... they seem to have all the same sensors. I also have the option of a 95 Bonneville that was supposed to be for an L36 engine (is that possible?) This is all 8192 Baud stuff... no OBDII....
Its the exact same PCM through ans through with the one exception being the EPROM chip... Thats the only diffrence...

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Old 03-16-2005, 06:32 PM   #5
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Default Re: PCM Question! Techies needed!!!!

Quote:
Originally Posted by jr's3800
Its the exact same PCM through ans through with the one exception being the EPROM chip... Thats the only diffrence...
that is really usefull information.
any chance it could be put in the tech info?
just a suggestion
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Old 03-16-2005, 07:11 PM   #6
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Default Re: PCM Question! Techies needed!!!!

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Originally Posted by 95naSTA
Quote:
Originally Posted by jr's3800
Its the exact same PCM through ans through with the one exception being the EPROM chip... Thats the only diffrence...
that is really usefull information.
any chance it could be put in the tech info?
just a suggestion
One of these days...

But 1994-95 Minivans with the 3800, 1994-95 Bonneville'*, 1994-95 Lesabres and pretty much all 1994-95 C and H bodies with the 3800 or 3800SC will have this PCM.. I'll have to do more research to see what all the PCM'* cross to and list them so people will know what to look for...

Good suggestion...

Somewhere along the line drop me a freindly PM/ Reminder and I'll see what I can do...

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Old 03-17-2005, 02:57 AM   #7
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DAGGUMIT... I think my temporary Car-Puter (HP Evectra) cant handle the serial device i was pluggin in to it. I get the MAX232 echo on my home PC (means that it works) but when its in teh car the HP just wont read it. I hate HP .

That means i probably wont have constant OBD for my trip this weekend... but i have a bigger better NON HP computer in the mail so when i get that set up ill be GREAT...

Pics of the current "temporary" setup in a moment
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Old 03-17-2005, 03:43 AM   #8
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LOOKIE LOOKIE

56k is fine but might take a while i think...

http://www.bonnevilleclub.com/forum/...=339187#339187
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