screwloose13
TYF Newbie
I'm new to all this and I'm trying g to learn how to fix my own vehicles. I'm having a p0300 code as soon as i start my 2007 tahoe 5.3. After idling for about 60 seconds the check engine light comes on and flashing. Sets off the stabilitrak and traction control messages. I've replaced spark plugs, coil packs, plug wires, new gas cap, battery, I've cleaned the maf sensor and throttle body. I've checked for vacuum leaks. I did notice the map sensor is loose and moves around a bit because one sides little bracket is broken. Could that cause a misfire? I need help.