Zack Waggles

I have a 2006 Chevy Equinox. It has been having starting issues here later for a while. When it's cold it starts up no problems. When it's warmed up it either starter cranks the motor up I hear it firing up then immediately it dies and or I start it up it drops down to 200 rpm or less then struggles but fires right up. I'm an aspiring mechanic and currently working at a ford dealership none the less. I'm a huge Chevy guy and can't seem to figure out what the issue is the fuel pump is working fine have no drivetrain issues on it. No codes pop up or are saved in the obd11 besides my abs. I have already did my 120,000 mile maintain economic at 115,000 miles and that consisted up spark wires plugs and an oil change. Atleast that's what Chevy is telling me. Am I missing anything besides the starting issue it runs better then the day I bought it down at Tustin Chevrolet is Los Angeles California.