Ok, I need some opinions on this

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by zcarczar, Jul 26, 2002.

  1. zcarczar

    zcarczar 1/2 ton status

    Feb 10, 2002
    Likes Received:
    Apple Valley California
    Ok, Ive been getting a code 43 on my 89 K5 ever since ive been driving it, Ive replaced the knock senser twice, didnt fix it, a couple of the tech's i work with have some different opinions on it, one thinks it may have a bad ignition module in it and maybe even a bad chip, the other one thinks it may be wiring. This weekend im going to check the module and chip, and it cant be wiring to the sensor since it does read a knock signal when tapping on the manifold, I also have access to the GM Tech 1 it that helps at all.
    Thanks in advance

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