O/D on or off when driving down the highway
I have always wondered when to use O/D and not to use it. I have a car, truck and MH. Today I found I drove on the highway for about 60 or so minutes with the O/D OFF. I wonder when it is appropri...
Forum Discussion
I have a adjunct to this question. I also have a fifthwheel and pull it with a Chevy 2500HD diesel with Alison transmission. I can not get it to say it is in tow haul or O/D off with using the button on the shift handle IF it is in D but if in 3 Both of them work. I am not sure they are not working in D but that it does not light up indicating that it is that mode of tow haul or O/D off which is the same button. IS THAT WEIRD or what? I have put it in tow haul while in 3 and then shifted to D and I think it works the tow haul. I like tow haul mostly for the way it uses the tranny for engine braking when pulling the fifthwheel.
