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ESC engine light code 43

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by k5moneypit, Jan 6, 2004.

  1. k5moneypit

    k5moneypit Registered Member

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    Location:
    brownstown,michigan
    Help, i've gotten this code 43 , seams like forever, tried everything from replacing the module to the knock sensor, probing wires, checking grounds. I have Hedman headers, and thought that might cause the knock sensor to react, but disconnected it, reset the computer and still the code came back, last time i checked the Esc module was 75 bucks, and I already replaced it once. This is one of those bugs I just cant find. Any advice or relative experiences would be greatly appreciated. 150,000 on the motor, but runs strong, it is the first year TBI so anythings possible I guess. :confused:
     
  2. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    Location:
    Melvindale, Michigan
    I've had that code on 3 different TBI trucks, and it was fixed with a reman ECM every time
     
  3. k5moneypit

    k5moneypit Registered Member

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    Location:
    brownstown,michigan
    dont say that, i've already replaced one when i bought the truck. I keep that in mind. thnx!
     

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