ECC Temp flashing - 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 07-16-2007, 11:17 PM   #1
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Default ECC Temp flashing

This happened on my car today. The temp flashed on and off a few times well I had the car in 'on' without the engine running. Once I started the car it was fine.

Was it trying to tell me something or was it just because the engine wasn't running?
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Old 07-16-2007, 11:24 PM   #2
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92 SE'* don't have an ECC.

98 SE'* only do if they have the SLE package. Maybe you need to get a little more specific?
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Old 07-17-2007, 11:25 AM   #3
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98 SE, sorry i always forget to include that

I thought the ECC on later years didn't do self diagnostic. So was it just some coincidence?
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Old 07-17-2007, 11:48 AM   #4
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Not quite right.

The 94+ ECC'* do run diagnostics and report back issues.. however the only way to retrieve those codes is with a Tech2 or equivalent. The flashing ECC in our experience can be anything from a failed temp sensor to a bad actuator and even a low or high freon pressure and more. The system see'* a fault and is letting you know.
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Old 07-17-2007, 12:00 PM   #5
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So it may be trying to tell me this problem? where it will only blow on the windshield?

http://www.bonnevilleclub.com/forum/...c.php?p=905377
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Old 07-17-2007, 12:04 PM   #6
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Maybe that problem or 100 other problems. We can play a guessing game if you like, but until you try to repair based on your symptoms, your only other option is to go to a dealer and have the codes pulled (or another mechanic that has a Tech2).
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