Traverse Forum banner

Diagnostic code; PO50D

3.9K views 26 replies 10 participants last post by  Jim647F  
Even if it’s brand new? Purchased July 27th
The P0300 is for a Random Misfire which is any or all cylinders randomly misfiring, not one specific cylinder. That is causing the P050D code for a rough idle. It could be fuel injectors, bad gas, fuel pressure low or a software issue. You have a first year design 4 cylinder turbo charged engine with Active Fuel Management (AFM). If GM has a bulletin number on this particular problem, then you are not the only one experiencing it.