2005 Envoy 6cyl Rough Idel And stalls

I have a 05 envoy the engine light is on, and I had it checked out, the diognostic said that there was a cyl 6 misfire, so I replaced the plugs and the coil pack I removed the fuel rail and injectors and cleand them also, and I cleaned the throttle body. I waited and drove it around and the light came back on with the same reading what else could make the cyl. misfire, the only thing I can think of is the injector what do yall think.

Welcome to AF. Do a compression test on that cylinder and the next one, post back the results. I assume you can feel the miss?

How many miles are on your vehicle? As stated above, do a compression check as you could have a cylinder head/gasket problem, burnt valve, ect.