Transfer case problem 4wd

1999 GMC SIERRA
149,000 MILES
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TOM BEAVER
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  • 2 POSTS
My front drive line will not spin freely in 2wd.If I lock it in four wd drive it works fine.I have another 1999 chev tahoe and in 2wd the front shaft will spin freely when in 2wd.Please help.I can shift transfer case into neutral by using buttons on dash Thanks
Mar 8, 2012 at 6:04 PM
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HMAC300
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  • 48,601 POSTS
make sure the encoder motoron thtcase is working correctly and the solenoid on the axle as well.
Mar 8, 2012 at 8:14 PM
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TOM BEAVER
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  • 2 POSTS
I can shift it into 4wd and front axle locks up.Also when I shift transfer case into neutral front drive line will not turn freely it seems to be locked up.Thanks
Mar 8, 2012 at 11:12 PM
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HMAC300
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  • 48,601 POSTS
you may have a problem internally in the t-case then. have a pro look atit for a better diagnosis.
Mar 8, 2012 at 11:16 PM