Good POINT! The "growling" my drivetrain makes in Normal Mode drives me nuts and why now- when in town, my choice is Sport mode. I'm always in the right gear and love hearing that 8-speed work. 245 65 17 isn't radical by any means but could be the issue when the ECM firmware might be...
I'm averaging 23.9, use Normal and Sport mode regularly, don't baby it and have the same truck. I'd be thinking about what it is, and within the drivetrain that's consuming more gas. Your mechanical efficiency took a nosedive, and at some point e.g, come of the line bad, post lift mod etc.,
Car Wash Update:
Drag Chain style: 10 washes
Since having learned of CAR WASH mode (aminal and huunvubu) I've experienced zero problems with ECM dumping Trans back into park. This includes "popping open" driver door to first latch position during drying cycle.
Drive Thru style: 10 washes...
;;;;;; UPDATE ;;;;;;;
The instruction manual on Temporary Neutral Mode worked well during "drag chain" car wash.
Thank you to those that READ THE MANUAL!
NOW ON AND TO THE "DRIVE THRU" car wash TEST TODAY.
Twice now my local car wash has put my Mav in PARK while going through the wash!!!!
First time I'd thought it was nerves and accidently did it myself when Knob is easily "bumped"...but then yesterday- NO ACCIDENT!
WTF is that all about? EMI or moisture
'cuz both times now it happened at the...