C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

89 CEL Codes

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Old Apr 24, 2009 | 01:39 PM
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Default 89 CEL Codes

I was wondering how I can go forward in checking whats trigeering my engine light. Is there a jumper i can short or something ?
thanks
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Old Apr 24, 2009 | 06:32 PM
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Default Paper clip solution

On my 93 use paper clip to get DTC codes from memory. With engine off put clip in diagnostic connector under dash. Place in top rightmost (A) opening and next rightmost (B). Turn key to accessory and Sevice Engine light should start flashing. Flashing should be 1 & 2 three times followed by your trouble code for three times.
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Old Apr 24, 2009 | 07:10 PM
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Default

See this link

http://www.corvettephotographs.com/c4vettes/codes.htm
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