Sensor locations? - Page 2 - 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 07-18-2003, 10:25 PM   #11
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coolent level sensor is on the rad half way down, i thinks the temp sensor is somewere near the termostat.
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Old 07-20-2003, 10:19 PM   #12
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Thanks again fellas. I will try it again in the morning. The problem (flashing temp) only started since I had the engine replaced. May have an a/c check and have them check for loose vacuum hoses. I live in Florida, the temps have been in the mid to upper 90s for the past two weeks but the a/c keeps me cool so I don't think it is anything to serious.
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Old 07-20-2003, 11:29 PM   #13
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What climate control code did you get?
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Old 07-21-2003, 05:17 AM   #14
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Was unable to get a code because I have not been able to get the diagnostic to work. I will try again in the morning using the instructions I printed off of techinfo. Does the a/c have to be turned on in order to start the diag? Or does it not matter.
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Old 07-21-2003, 02:11 PM   #15
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I don't think it has to be on... I think you have to hold the off and warm buttons for a few seconds. Tell us if that works, and if it does, we should have Will change the procedure to reflect that.
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Old 07-21-2003, 10:23 PM   #16
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This morning I tried to reset the error codes. First I turned the a/c off. Then I pressed the off button and the temp control button at the same time. Oh yea, I waited until the temp numbers had quit flashing before I did this. I held both buttons for about 10 seconds and nothing happened. The diag did not start, so I was unable to get any diag codes from the a/c. I had the printout from techinfo with me, so I know I was following the directions the way they were written. Since I cannot get into the diag mode, I am beginning to wonder if I may have a more serious problem with auto control. But everything seems to work fine except I cannot get rid of that annoying flashing at startup!
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Old 07-21-2003, 10:49 PM   #17
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OK, let me go try it on my 94 control head.

Do you have the control head with the "mode" button on it?
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Old 07-21-2003, 10:54 PM   #18
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I don't think there is a mode button.
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Old 07-21-2003, 11:49 PM   #19
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OK, now I have a 94 control head with a 93 HVAC programmer, and the diagnostics mode works fine. With the ignition in run, and the HVAC off, press and hold off and Temp Up for a few seconds to display the codes.

If this is what you have already tried, and it doesn't work, I'm not sure what is wrong.
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Old 07-22-2003, 12:00 AM   #20
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ok guys, thank you all for your quick replies and your help with my sensor questions. I don't know why the diag will not work, but the a/c works fine for now and I remember reading that it may clear itself after 50 start cycles. So I will just wait and see what happens. You guys are a lot of help and I will be getting back with you all if I have any more problems that I can't handle. Thanks!!!!
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