You guys can throw parts at your trucks all day long and still not fix it. Why not just read what rfmaster and I are suggesting for you to do? Either a code reader for @ $25 or a FREE paper clip jumper at the ALDL connector under the dash -left hand side- .Jumper pin A to B with ignition on and watch the "check engine" light. It gives a flash, followed by 2 more flashes. That is a code 12. It tells you that the ecm is ok. Then if any other codes are stored in the ecm, they will flash also. Each code flashes 3 times. Write the code down and do a search on your computer at the following site.
http://www.extreme-check-engine-ligh...%20Decoder.htm
At least this way you'll be headed in the right direction for a fix.
On edit, remember, when you disconnect the battery you wipe out any codes that are store in the ecm.