pcm pinout and connector question

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02-13-2010, 07:17 PM

larrya97

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pcm pinout and connector question

can anyone tell me what the connectors on a pcm for a 97 blazer with the 4.3 mine has red black blue white. which one is c1 or c2 or c3 or c4. , or where to look for this information. thanks in advance.

02-13-2010, 10:07 PM

LRV31

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This info is for a 2000 but I think it should be the same for your 1997:

C1 - Blue
C2- Red
C3- Clear / White
C4- Black

02-14-2010, 02:22 AM

larrya97

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thank you for that information.

02-14-2010, 06:30 AM

marksoftball

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marksoftball is an unknown quantity at this point

LRV31 Got it right.
Attached is a drawing for a 1997 Blazer to give you a visual.

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pcm pinout and connector question-1997-pcm-connection.gif

Last edited by marksoftball; 02-14-2010 at 06:34 AM.

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