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  1. 1990 Chevy 1500 keeps flashing OBD1 code 43

    I have replaced the knock sensor and the Electronic Spark Control Module. OBD 1 code 43 continues to flash even after i reset the ECM. Also the engine lacks power, especially when climbing hills. I...
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    My introduction

    Hello fellow GMC truckers.

    My name is Jacob. I live in Ky. Im 20 years old. I have a 1990 Chevy 1500. I build tobacco barns and love working on engines!
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