Got a weird problem. Just changed the fuel pump assembly and fuel filter in my 99 Astro, 1 day later I've got a P1404 code (EGR not closing). Could I have done something when I changed the fuel pump? or is something totally unrelated and just a freak coincidence? I see alot of posts about carbon in the EGR valves, does this apply to the 99's as well?
Thanks in advance