2004 tahoe OBD code P0300,help needed

[classicman]

My 2004 tahoe started idling rough,then the check engine light came on.I plugged in my obd2,and the code that it found was P0300.it has new sparkplugs,new sparkplug wires,new airfilter,knock sensors were replaced almost 2 year's ago(the ones located under the intake manifold).my question is could it be a intake manifold leak?
Anybody out there that could help me,please.TY

 

[Kbailey]

Random missfire code from intake leak is possible but other codes would prolly be present. Check maf operation. And fuel pressure Koer and Koeo

 

[classicman]

Ok i'll check those out,il be back to let u know how things went

 

[Tonyrodz]

How'd it go? I'm having the same issue on my 03.