4wd not working.

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ilmk123

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Joined
Jan 3, 2010
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Location
Burlington Ia.
My 4wd is not working in my2002
3/4 4wd suburban. I replaced the front servo and checked the switch in the dash. Jacked up the front end and spun the front wheels in 2hi by hand and only one wheel spun. Put in 4hi and did the samething and one wheel spun on way and the other one the other.So I know the front is working.
The transfer case seems to switche from 2hi to 4hi to 4lo with no problem. I know for sure it is going into 4 lo. What could the problem be? Think it could be the switch on the transfer case? It seem like everything is working but the front drive shaft wont turn..Thank you for your help! Scott
 

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