94 Bonneville "Check Gauges" light flashing and &q - 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 10-23-2005, 09:48 PM   #1
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Default 94 Bonneville "Check Gauges" light flashing and &q

My son'* 94 has been constantly chiming and flashing the "Check Gauges" for months. All of the gauges read perfectly fine. Can anyone describe what triggers this insane function?
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Old 10-23-2005, 09:53 PM   #2
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are any other lights lighting up such as the low coolant, door ajar or headlights or taillights out?
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Old 10-23-2005, 09:57 PM   #3
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no, none. Everything is displaying perfect, car runs perfect, no "check engine" lamp either.
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Old 10-23-2005, 10:40 PM   #4
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moving to 1992-1999 forum, will get more mechanical exposure there.
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Old 10-24-2005, 10:56 PM   #5
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I just dealt with this on a 97 SSE. Check the codes, there will probably be one related to "Engine Hot Warning Circuit" or something along those lines. The PCM sends a signal to the instrument cluster if it senses the engine overheating, and that will trigger the "Check Gauges" light to come on. I can get the wiring diagram for it from work tomorrow to confirm this, but I believe there are seperate trigger wires from the PCM to the cluster for overheating, low oil pressure, and abnormal engine temperature.

I followed the entire flowchart in AllData to determine the failure, and it came down to "Intermittent Failure" as the diagnosis. In my case, the customer declined any repairs. I believe the cause was the instrument cluster, mainly due to the common problems these clusters seem to be plagued with.
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