July 6, 20072000 Z71 4.8L V8, 113,000mi.
I have the above mentioned truck that has developed a rough idle. At a light it will be running smooth then take a dip and run rough then back to smooth numerous times. I have changed the fuel pump within the past 10months, fuel filter within the past 1,000mi. and checked for fluid in the vacuum line off of the regulator. While this topic has been addressed numerous times, I was wondering since all previously mentioned fix its have already been attempted if anyone has any further items to check?
Thanks in advance