That is strange, the 04 6.0L Deisel Supplement shows it on the dash cluster by the oil temp gauge (the 03 one doesn't talk about tow/haul at all). Were they all trucks, because I don't think the 03, 04 vans had it?

 

They were all F series. The most recent van is the one I still have, it's a 2002. It has OD off on the shifter.

 

I can speak for the '03 Super Duty personally as I had one and my T/H light was on the end of the shifter. As far as the '04 I can only assume it was the same because it had the same cluster. From '05 and up the clusters were different.

 

O/D off light is a different thing from the Tow Haul mode, but it sounds like the pre 2005 trucks used the same light at the end of the shifter, but with different words on it.

 

My 03 and 05 both had the light on the dash, both said tow/haul both were 6.0lpsd.

 

I have an 04 F350 drw w/5spdod and the light is in the dash, not shift lever. My switch has quit working and this thread search gave me insight on how & what to fix. Thanks guys for the help! Although I stayed at a Holiday Inn Express last night, I couldn't have tackled this problem without your help!