I'm a first time 4x4 owner. I've had trucks all my life, this is just the first 4wd I've owned so I'm not sure if this is normal or not.
I was pulling my boat out of the water and got in my truck and put it in 4 high then put the truck in reverse to back the trailer on to the ramp. When I started to back up, I felt a dragging like I had the parking brake on. It felt strong enough that I stopped the truck, checked the parking brake, then got out and walked around the truck and trailer to make sure I wasn't dragging anything. To make sure I wasn't doing any more damage, I returned to 2wd and backed the trailer in to the ramp and then put it in 4 high to pull the boat out of the water. I never heard any strange noises, I just never felt that kind of drag before and just want to know if putting it in reverse in 4 high is causing damage or if that is the norm. I searched the forum as well as the google machine to see if other people have had similar experiences, or if I'm just about to have a transmission failure. The truck is a 2014 GMC Sierra High Country 4x4 with 100k miles and has had all recommended maintenance performed through the life of the truck. Any information about this would be helpful. Thanks!
