Question about 1994 Chevrolet S-10 Blazer

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Determine if front diff or transfercase is bad

Our 94 chev blazeer k5 (fullsize) man trans goes into 4h and 4l but seems to have a jumping transfercase chain as it underload (driving) will make a skipping or slapping noise from the transfer case espicially when turning,how do I determine if it is in fact the transfercase.

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Sounds like the chain is stretched. with vehicle in air you can rotate the front and rear and see how much play is in two yokes. with it in 4hi and will probably hear chain slapping case when you do

Posted on Dec 29, 2008

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92 full size blazer shifts into 4 high and low and won't engage


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4WD


Look for damaged wires, or something bent, on the Auto Disconnect Device on the front axle before you do anything else. The 4WD HI light is not coming on because the front diff is not engaging.
Re 4 LO: In 4 LO, you ar NOT getting "4 LO", what you are really getting 2WD LO, because of the output gearing of the transfer case.
In any case, your front diff is not locking in, in either mode. The A.D.D. controls the 4 Hi lite.

Oct 11, 2008 | 1997 Toyota 4Runner

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