338 i believe is a crankshaft sensor issue and the 543 is a heater grid Issue? Anyone else Have these. 07 6.7 auto 2300 miles POS.. Almost bought a GM the moth before, Now wishing I did.

 

Not that I know the answer to your qestion, but have you looked at the dieselplace? GM is having just as many problems as we are ( I think Ford has the most though). If your not happy with your truck sell it and buy a GM, no one is going to say, Hey you can't do that.

 

I've been on www.thedieselstop.com and the Ford 6.4 is not having much of anything going on.A WHOLE lot quieter site then the 6.0 forum under neath the 6.4. The CHEVY trucks are just plain UGLY is their first and foremost issue.