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Two pins of the GM OBD1 plug control the display mode. If those two pins are jumpered, the code will display on the dashboard engine light. The light will flash to show the code.

A 1997 would have an OBD2 plug, not the OBD1 plug. You can not get the codes by jumping two pins. You need a scan tool. Most part stores (Autozone, Advanced, etc) will read the codes for free.

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โˆ™ 2013-03-12 11:33:09
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Q: How can you find the codes and turn out the ECU light on your 1997 Cavalier without using an OBD unit?
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