Brother has some codes on his L67 2000 SE (updated 10-2) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-26-2007, 06:11 PM   #1
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Default Brother has some codes on his L67 2000 SE (updated 10-2)

He came up with

P0137----O2 signal Low bank, sensor 2

U1000----- class 2 serial com problem

P0440----Evap emissions system fault

P1260---Fuel pump speed relay control ckt

Also was getting a cyclinder 4 misfire
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Old 09-26-2007, 07:55 PM   #2
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P1260 - Supercharged cars have a 2 speed fuel pump controlled by a fuel pump control module.
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Old 09-26-2007, 08:04 PM   #3
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So is that module no good?
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Old 09-26-2007, 08:09 PM   #4
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U1000
P0137
P0440

I couldn't find any information on P1260. With the noise you were having by the fuel rail, I wonder of the evap purge solenoid may be giving you the P0440.
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Old 09-26-2007, 08:10 PM   #5
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Was the module & pump part of the swap? The SE wouldn't have these.
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Old 09-26-2007, 08:20 PM   #6
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No, we still have the L36 pump.

Ted... do you know if any of these codes would prevent a NYS inspection. I know the EVAP, and rear O2 can be disabled by intense through the pcm. (obviously going to fix them but just saying)
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Old 09-26-2007, 08:52 PM   #7
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I was under the impression that any code would cause it to be rejected in NYS.
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Old 09-26-2007, 09:14 PM   #8
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ohh, i thought you were allowed so many points (with each code being worth a set amount of points). I dunno.... I have 1995s and dont worry. Brother is a little worried about it. But i know the evap and o2 codes can be disabled. The fuel code.... how is that fixable, a l67 pump and canister ect?

As for the communication code... would that be because it is a L67 pcm in the car?
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Old 09-26-2007, 09:19 PM   #9
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http://cgi.ebay.com/ebaymotors/1999-...5573QQtcZphoto

Would that fix the fuel code, or is there a seperate module also?
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Old 09-26-2007, 09:21 PM   #10
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There is a seperate control module in the L67 cars
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