Hey steve.. I finally got the EGR valve off the Blazer... what a PITA!
Had to take off the Air warmer/filter assembly and use a LONG skinny 1/4" socket
extension from the fan to reach the bolts... what a wonderful place Chevy picked
to put the serpentine belt tensioner!
I had to sort of reverse your instructions because the plug wouldn't come off
until the valve was unbolted and turned a bit so the belt tensioner wasn't
pressing the plug on..
Anyway, I cleaned the pintle and seat, now I'm trying to find a Kleen Screen
gasket for it.. (part #2-1357 at Tomco)
I've called all the easy ones... Napa, pep boys, kragen, Auto Zone, etc. with no
Do you remember where you bought yours?
Thanks again for all your help!