Tow haul and overdrive
Does tow haul lock out overdrive? Mine doesn't seem to or, I haven't observed correctly.
Forum Discussion
BB_TX wrote:gmc6000 wrote:
No, tow/haul does not lock out overdrive on any GM or Ram truck, at least. Tow/haul only changes your shift points on the transmission.
If your truck normally shifts into overdrive at, lets say 55 MPH, in tow/haul mode you may need to hit 60-65 before it shifts into overdrive.
Same for Ford. At least for the last 10 yrs or more.
yup, same on my duramax's. you CAN lock out overdrive, but not by selecting tow haul. have to select OD lockout seperately.
and in tow haul the 6 speed shifts into 6th around 62mph. out of tow haul low to mid 50's.
and on my 2015 tow haul also locks up the torque converter clutch for 2nd through 6th gear.
