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    01 Tahoe No Heat Sometimes

    So when i go to start up my truck and let it run, right before it gets up to temp the heat works fantastic but as soon as it gets up to temp the temp on my gauge just drops and i have to let the heat kind of almost charge up to use it, also i have a steady coolant leak but cant find from where...
  2. C

    2001 GMC Yukon Random Misfire started with p0303 went to p0300

    So i have a 01 Yukon with the 5.3, had a cylinder 3 misfire (p0303) according to cheap scan tool. misfire got worse and threw flashing CEL when i pulled cyl 3 spark plug to check. moved spark plugs and wires from 1-3 and moved injector, code went away but still misfired. Installed new intake...

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