Cylinder #6 Misfire
 

I have a 1999 K1500 Suburban that the service engine light keeps coming on. When I read the code it says it is a Cylinder #6 Misfire each time. Also when i accelerate the service light flashes. The plugs were changed about 2000 miles ago, i also just changed the plug wires, the distributor cap and rotor and the same code keeps appearing. I am beginning to wonder about a fuel injector and the fuel pump. What do you think??

How does the plug look? I doubt it would be a fuel pump as that would affect the other plugs but an injector is possible.