Knocking while engaged in 4 wheel drive - Chevy and GMC Duramax Diesel Forum
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Old 08-26-2009, 11:06 AM   eBay Motors  #1 (permalink)
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Join Date: Aug 2009
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Knocking while engaged in 4 wheel drive

2002 4x4 6 speed manual shift. I accidentally left the 4 wheel drive engaged for about 4 miles on the highway... there were 3 or 4 knocks just below the stick shift that made me realize that it was in 4 wheel drive, I disengaged the 4 wheel to 2 wheel drive while moving and the knocks went away.... Now when I put it in 4 wheel drive I hear a knock that is almost like a tooth missing every now and thenů. I have only engaged the 4 wheel drive 2 times since the occurrence and for a short distance just to see if I could hear the noise and it knocked one times on both tries.. 1 time I was turning sharp and it kind of felt like a very small pause when it knocked. I normally use the 4 wheel drive a few times a year and for short distances ... Is this coming from the 6 speed manual transmission, universal joint or from the transfer case? Can someone please help on what I should do or how to go about troubleshooting the problem? Thanks in advance
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