Finally stored a code. - 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 10-26-2007, 06:23 PM   #1
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Default Finally stored a code.

I saw the SES light come on and then go off after about 15 seconds when I was coming back from lunch today. So when I left I scaned the code and got #57. My question would be is it the BCS or the BCA, and where can I get one since I just recently gave my extras away to a member to fix his? One more thing is could this cause up to 20 degrees of KR?
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Old 10-26-2007, 06:43 PM   #2
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KR depends on how it fails.

The PCM can't even see the BCA, so we'll concentrate on the BCS for now. Disconnect the connector and check the resistance across the two pins on the solenoid. Let us know how many ohms.
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Old 10-26-2007, 06:51 PM   #3
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Ok I checked and came up with 250 ohms.
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Old 10-26-2007, 09:39 PM   #4
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Double-check just to be sure. It should be about 30 ohms. You may have found your problem. Just to clarify, you checked the resistance with the connector off, and measured the two pins down inside the BCS?
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Old 10-26-2007, 10:11 PM   #5
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Yes I took the connector off and measured the two pins on the BCS that are a little hard to reach on a hot motor . I did try a couple times to see if I get the same reading. So is this avalible anywhere besides the JY? I would guess this is why my KR comes and goes and does not do this all the time. The only other thing that I can think of to get knock from is the DP flange leak that I will explain in another post. Thanks Will the help is greatly appreciated.
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Old 10-26-2007, 11:03 PM   #6
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It should be about 20 bucks from the dealer. You MIGHT be able to get it through NAPA as well.

I'd send you one, but I've shipped off 3 good ones for free in the last year, and only have one good unit left as a spare (along with 3 bad) Lucky you.

Someone else may have one laying around. Try posting in WANTED.
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Old 10-26-2007, 11:25 PM   #7
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That'* cool. I will try NAPA tomorrow and see if they have one. If they dont I will go to the Stealership.
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Old 10-27-2007, 01:55 PM   #8
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you mention your getting 20* of KR?...

My car was getting that all the time, it turned out to be a bad PCM, once I swaped it out with a NEW one the KR disapeared. back to only like 1-2* on the shifts with a 2.2 on, on a hot summer day.
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Old 10-27-2007, 03:21 PM   #9
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Hmmmm, I will have to look into that if the BCS dosen't fix it. Thanks for the info.
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Old 10-27-2007, 06:34 PM   #10
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Ok I went to Parts Plus, and NAPA, and neither can figure out the part I am looking for. Does anyone have a NAPA or Dealer part number for the BCS? The guy at NAPA said he could maybe cross reference it if I had a part number. The only reason I didn't have the number off of the one on my car is cause my wife has it at work today.
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