Anybody thrown this code? Got it in combination with P0101 today. I plan to clean the MAF sensor but the other one I'm kinda at a loss on. The list says "EGR circuit range/performance failure. This mean my EGR valve or electronics are going to fail? Or does it mean the CC just farted and now is okay? Odd thing too. I checked with engine off and got both codes, started engine and couldn't find the 404 again and neither were stored in history engine on or off???
update: Cleaned MAF sensor even though it didn't look dirty or sooty. Will see tomorrow if either codes set again.
2001 CC LS, pewter, stock, 4.3,Wait4meperformance, CFM throttle blade, Helix throttle body spacer, 4spd auto, 3button electric 4x4 shift, heavy duty factory suspension, Bilsteins, 1" rear wheel spacers, skid plates.
Update, Round two. After cleaning MAF sensor I used the truck again today and it didn't set a code but I stopped by a friend's house and he put his snap-on scanner on it. Scanner said MAF out of operating range. Ses light wasn't on and I actually stopped there to inquire if he could do crank position relearn procedure when I install my wait4me module. He said he could. Only thing I noticed during operation today was a mid-range loaded slight surge. Only noticeable around 3k rpm when under load (mud). Looks like next step is replace MAF sensor. (ugh) Oh goody! More money spent and not on mods. Blast it.
Perhaps on the bright side this might help out fuel mileage (I hope). Let ya know how it turns out.
2001 CC LS, pewter, stock, 4.3,Wait4meperformance, CFM throttle blade, Helix throttle body spacer, 4spd auto, 3button electric 4x4 shift, heavy duty factory suspension, Bilsteins, 1" rear wheel spacers, skid plates.
This mean my EGR valve or electronics are going to fail? 
Or does it mean the CC just farted and now is okay? 
Odd thing too. I checked with engine off and got both codes, started engine and couldn't find the 404 again and neither were stored in history engine on or off??? 
