i was going up a fairly steep gravel road and my rear wheels start to spin so i stop and and put it in 4-auto and it seemed to go in in fine but then it started making grinding noise so i took it out and waited till i got to level ground and tried it again, same but not as bad, but still there, took it to dealer and had their tech drive it, he agreed not good, and they are replacing it, this was the first time i had even tried the 4wheel drive, i just assumed since it was new that it worked! if i had tried it at 36001 things would be different like about $4500 different.....