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Up shift Light on an '88 C4 700R4

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Old 07-09-2004, 12:23 PM
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Blown383C4
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Default Up shift Light on an '88 C4 700R4
I started to get an "up shift" light when I'm cruisung on the highway in overdrive. I'm already in overdrive. Any ideas? Thanks.
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Old 07-09-2004, 05:54 PM
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Does the ECM control this light?
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Old 07-09-2004, 06:10 PM
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65Z01
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It sounds like the ECM is not getting the signal from the Overdrive Enable switch located under the console near the shifter.
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