Clunking loud

[Neil ferguson]

Hi I'm new to site but read post that seem similar to me I hit 11000 km and all of sudden loud clunking. Took to dealer they found rear gear oil black with mettalica fined replaced rear diff carrier due to incorrect shimming they also replaced parts in transfer case.noise was gone 1 month later clunk is back louder and now to when I Rev up to about 90 km and let off clunk occurs again .need suggestions and help shop foreman n mechanic think to replace whole transfer case but are waitin to here back from gm engineer? ?help

[newdude]

Sounds like they are helping you a lot (seriously, I don't say that sarcastically) if they are trying to get a field engineer involved. Only thing you could do additionally is call customer service and have them open a case and look into what they've done so far.

[Neil ferguson]

Like gm customer service I have the first time it went in and again called gm about same issue month later they still to get back to me. I live in ontario . So u think there on right track or u think they need to replace the whole transfer case. Like I said the new parts and what they changed corrected the clunk for a month so it's obvious what the replaced in parts or a whole is the color ate but occurred again month later frustrating I bought in July 2015 ughgughg 45 000 bucks