Tow/Haul mode quit working

crawlerhauler · Jul 22, 2015

As the title says states, went to pick up my trailer from my buddies house tonight and after I hooked it up, hit the button and nothing. Exhaust brake still works and seems like that puts the truck in tow mode anyway just without the light on the dash. It worked a week ago when I dropped my trailer off. Only thing I've done to the truck recently is put a b&w turnover gooseneck hitch in it but I really don't see what that would have to do with that. Made sure I didn't pinch or hit any harnesses when I was installing it. I will check the fuses tomorrow. If it's not that it's off to the dealer to deal with. But anybody else had issues with this?

sledhead_24_7 · Jul 22, 2015

Hmmmm interesting, could be a fuse for sure.

Powerstroke Man 6.4 · Jul 22, 2015

crawlerhauler said:
As the title says states, went to pick up my trailer from my buddies house tonight and after I hooked it up, hit the button and nothing. Exhaust brake still works and seems like that puts the truck in tow mode anyway just without the light on the dash. It worked a week ago when I dropped my trailer off. Only thing I've done to the truck recently is put a b&w turnover gooseneck hitch in it but I really don't see what that would have to do with that. Made sure I didn't pinch or hit any harnesses when I was installing it. I will check the fuses tomorrow. If it's not that it's off to the dealer to deal with. But anybody else had issues with this?

Any codes?

crawlerhauler · Jul 23, 2015

No codes. Just rolled the truck over on 5k miles.

Tom@BigTimeKustomz · Jul 23, 2015

You check the fuses? I hope this never happens to me, I use tow/haul 24/7.

crawlerhauler · Aug 20, 2015

Although it's been almost a month just figured I'd post the results of the dealers findings. After a couple days I got a call back saying that the tcm was bad. Was replaced under warranty and has been working well ever since