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  1. S

    Change your spark plugs!!

    Just bought a 99 Chevy Z71 and was experiencing hesitation under load and shaking violently. Checked the wires and plugs and they definitely needed to be replaced. A spark plug thread had broken off inside the engine head and the spark plug separated. Had to use an EZ out to get the threading...
  2. S

    Help to diagnose

    So I have replaced plugs and wires and ignition coil the shaking upon acceleration has gone away. My shifting points have gotten better but still experiencing the constant off and on vibration in 4th gear between 1000-1500 rpm unless i give itimore gas justjust an update. Will be bringing it...
  3. S

    Ground issue???

    Bump
  4. S

    Ground issue???

    I have a 99 k1500 when I start my truck, my cluster gages for oil, temp and battery jump back and forth and sometimes will be fine like normal. Also my gas Gage needle constantly shakes back and forth. Also I have a buzzing sound from drivers door then my radio display will say failure but...
  5. S

    Help to diagnose

    Thank you for the response I will get it looked into and respond when determined thank you
  6. S

    Help to diagnose

    I have a 99 Chevy z71 and the truck idles fine it runs and shifts fine until about 35mph or 3rd gear. I've noticed it will drive around 2500 rpm range in 3rd gear I have to give it more gas to get it to shift into 4th. When giving it more gas the truck shakes and shudders until I either let...
  7. S

    heating and temperature issues

    So I took the radiator cap off when engine cold. Started engine filled up radiator with water to the top at operating temp. I now have heat! Thank you very much
  8. S

    heating and temperature issues

    I have a 96 chevy c1500 1/2 ton PU with 5.0l auto trans. The heat in my truck is not working properly, the heat will be warm sometimes at idle until i drive it then it turns to colder air, on any selection on dial (top vent, bottom, top and bottom, bottom and defrost). I didnt have any...

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