2wd/4wd transfer lever pops into neutral

1997 GMC SIERRA
143,000 MILES • V8 • 4WD • MANUAL
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BILLBARTH
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1997 GMC K1500 Truck. Model is serra/ sle with stand transmission. I will be driving along in 2wd and it will pop out of 2wd to neutral. I have to pull over and stop to put it in 2wd and continue. What is the problem with the transfer case? Someone said to check the trouble codes. Their are none to be check.

Dec 16, 2010 at 5:24 PM
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KHLOW2008
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Do you mean no trouble codes were retrieved.

Please reply to the same thread so that notification would be sent to the person attending to you and a history of correspondence are available.
Dec 16, 2010 at 8:03 PM
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BILLBARTH
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The orginal thread had some wrong information





























The orginal message had wrong information sent by accident. So I sent another and a donation and started all over. So what is the answer. The orginal said an Acadia which is wrong it is a Sierra, with the mileage and correct information. Help Please





Dec 16, 2010 at 11:46 PM
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KHLOW2008
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Did you try to retrieve for trouble codes as per previous reply?

Dec 17, 2010 at 1:06 PM