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2020 transfer case clunk

3K views 2 replies 3 participants last post by  sdelam 
#1 ·
Just read this on GM TechLink. Apparently trucks with the NQF or NQH transfer case can have a clunking sound during coast down. It requires the mounting bolts be loosened and the case backed up no more than an inch and a specific re torquing of mounting bolts.
All the info is on the website dated 11/20/19.
 
#3 ·
I had this done to mine, purchased in July and they wouldn't release it to me until it was done. Dealer said they were replaceing the bolts though not just remove/re-torque. Havent had any issues with clunking other than a few hard shifts during the transmission learning period.
 
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