After reading this post and a few more like it I ordered a spare #4 line for my 05 this morning. We do a lot of traveling pulling the 5th wheel and I do not want to be stranded on the side of the road somewhere if this line breaks. Thanks for all the good info. and part number.

 

I wish I would have seen this earlier. Mine went out last week and I was in a bind & had to go to the dealer. I pd $42.

How long has this problem been going on and what is causing it?

 

tighten your line isolators.... problem solved.

 

just ordered a spare, cost $22