Daughter had softball tonight so no chance to "play" with the truck. I did get new sparkplugs and stopped by the Chevy dealer and had them read the codes. He didn't tell me the numbers but they were as follows
Bank #2 running rich
He thought that it sounded fuel related but wouldn't know for sure unless I brought it into the shop.
I have a coil per cylinder on the truck and the spark was stong enough to jump about 1" from the coil to the plug wire. The problems I have are only when the truck is starting & idling, soon as I start driving the Service Enginge light goes off and she runs like a champ.. until the next stop...
Tomorrow afternoon I will change plugs, test the plug wires, MAF unit, and switch the #2 & #4 fuel injector and see if the non-running cylinder changes spots.
Until then thanks again for the help and wish me luck!