If it's a 2.7 v6 maybe u get 24mpg but no way in hell you get 12700 lbs tow rating.
3.5 eb will do 12700lbs but no freaking way 24mpg unless you cruise at 55 to 60 which is impossible in urban or interstate. So be truthful here with a 3.5 eb 10speed max tow owner
Because gm fullsize trucks suck...
I have owned the big three fullsize trucks. Most problematic are gm and Chevy.
Second least problem is Ford.
Least to zero problem is ram.
Now for performance and capacity is Ford. For daily comfort, best combined mpg is ram.
Mine is opposite of yours. F150 3.5 eb 10 speed 4x4 with max tow package cannot best my diesel gladiator for mpg.
Gladiator is my daily, F150 is for backup in case gladiator decides to die without reasons!
Based on your username with Ruger, u must like Ruger firearms. Use your Rugers and put some holes in that naughty gladiator, perhaps the gladiator will be good now no more problem!