code 43

  1. Z

    Hard/No start then runs fine

    I have been dealing with an issue that turned out to be a seized IAC valve causing it to bog down on decel or at a stoplight. It would bog down only for a few seconds, except at highway speed, then go right back to normal idle. It would almost sound as if it had a lopey cam in it. Since fixing...
  2. T

    GM Diagnostic Flowcharts

    My truck is throwing a code 32 and a 43. Does anyone have a copy of those flowcharts that show the diagnostics process for these? Its a 89 350. I used to have a PDF of the whole book but i can't seem to locate it. Any help is appreciated.
  3. T

    Misfire and voltage drop caused by instrument cluster

    Hello all, I have been chasing an issue on my 1993 C1500 5.7, engine and trans are out of a 1990 c1500. New parts include: Reman ECM, IAC, TPS, MAP, Ignition Coil, Plugs and wires, Coolant Temp Sensor, Oil Sensor., All grounds. I have been having a misfire issue, and whenever the turn signals...

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