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Cars & Trucks Master
1,209 Answers
- Posted on Aug 23, 2014
Re: 1995 impala won't flash codes when I put the GM key...
Well, being a 1995 you could have an OBD I or and OBD II system. If it is an OBD I you can get the check engine light to flash your codes by installing a jumper wire between terminal "A" and "B" in the ALDL plug. If you have an OBD II system you will need a scan tool hooked to the ALDL plug.
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