Joeyp
Ram Guru
I have had the same issue for over a year....The noise appeared out of nowhere....I have a video posted on You Tube. Originally I thought it was the transfer case as well, but they finally changed the valve body and all of a sudden no noise....well the noise came back after 3 months. I just threw another code the other day and truck is now back in the shop...This time I will be getting a new tranny....The only thing I can think of is that the tranny made the new valve body go bad. I always drove around in 4wd auto but that ended up just prolonging having the issue repaired. I should have just kept it in 2wd so that the issue just got worse.Its coming from the chain inside the transfer case. If you put your truck in 4wd auto, it goes away. My opinion is Its the chain rattling when under load, but not engaged in 4wd. when you use 4ws auto, it engages the chain inside the transfer case, but not the front axle. noise goes away. At least in mine it did.