Another code 43

Code43

By Leon Stredwick
January 31, 2020 in Ask A GM Technician

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Leon Stredwick

Posted January 31, 2020

So I have a 93 k1500 Blazer that I rebuilt the engine in and it’s giving me a code 43, I put in a new distributor, new knock sensor, checked the voltage on the wire from knock sensor to the pcm and checked output from the knock sensor and found nothing wrong but the timing won’t keep up! What’s left?

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