I lost a bunch of emails, so do not have an exact one to share, but I googled gm executives, etc and eventually came across some very high people and they replied and fixed my problem immediately.
there are good diagnostics for the egr here- Part 1 -3.1L, 3.4L GM Index of Articles.
I just completed it in a 2005 buick, I also removed and cleaned the valve and still have the problem. I also have an 05 equinox with 120k but no egr problems so far
I plan to replace the egr
most times you...
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