Rear gears swap

2005 1500 Avalanche, 4 X 4. Does anyone know if 4.10 gears will fit in a 3.42rear end housing?

2005 1500 Avalanche, 4 X 4. Does anyone know if 4.10 gears will fit in a 3.42rear end housing?

THAT IS WAY TO LOW GEAR RATIO FOR HWY WAY DRIVING.
Why are you swaping
THIS LINK SHOULD HELP.
http://www.differentials.com/install.html

I want to pull a 4800 lb travel trailer, and was told that the 3.42 rear end will be way too doggy if I encounter any hills...

Yes they will fit, but a 3.73 will get the job done unless you have really large tires.

I want to pull a 4800 lb travel trailer, and was told that the 3.42 rear end will be way too doggy if I encounter any hills...

Due to the expense of changing both front and rear and loss of fuel mileage I would try it as is.
But make sure you have a big extra transmission cooler.
Good Luck

Plus the 4x4 will not work right.

Thanks for the help. I am going to have a tran cooler installed tomorrow.