Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is Bobby. Thank you for the question. Though this can be caused by anything from the rear differential to the transmission, the most common issue is where the drive shaft either enters the transmission or the transfer case if it is all wheel drive. The output bushing can fail or the drive shaft splines need to be lubed as it can bind causing this noise. Most of the time it is an easy fix though. I would have it looked at to make sure prior to purchasing it. Please let me know if you need more help.
Thanks for getting back with me Shelley. If it is just the output shaft that need to be lubed it should only be able $100. If it was a transmission or transfer case issue then that can be several thousand dollars. Either way this shop should be able to see what is going on. Feel free to let me know what they say and we can continue as needed.