2007 Suburban Z71 towing question
Hey guys I'm new to towing a camper. We have a 24' tt dry weight 4500#. I just found out we have the gt4 (3.73) gear ratio on our tv. We have put a transmission cooler on the vehicle to cool it d...
Forum Discussion
GWolfe wrote:
The tow/haul will not take it out of overdrive if you have the 4 speed transmission, you will have to put the gear selector in 3rd yourself. At least my 04 was that way.
This is wrong. If you are running tow/haul mode on a 4L60E, it will hold third gear locked up until you get over 63MPH. Then it will shift to 4th with the TC locked, if you increase RPM enough to unlock the TC it will automatically shift to 3rd gear.
