94 S-10 Blazer will not go into 4 wheel drive


Old 07-31-05, 05:40 AM
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94 S-10 Blazer will not go into 4 wheel drive

My '94 S-10 will not shift into 4x4. Fuse is good. Electronic shifter rocker switch lights on engine start, but will not engage. I feel that iit is either a relay or vacuum prob., but obviously haven't worked it out yet... any ideas?
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Old 07-31-05, 01:16 PM
Join Date: Apr 2003
Posts: 174
Encoder motor, known weak point on this system. If your 4WD lite does not come on, encoder motor position logic is not being met. Try, disconnecting the battery for a few min. then connecting it and see if it works, if the lights just blinks (about 5 times then go out) it is your motor. Look on eBay as the dealer will take your newborn for payment.
Old 04-12-06, 09:49 PM
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Join Date: Apr 2006
Location: canada
Posts: 5
Thumbs up 4x4 not kicking in

hi look under your the metal pan below your battery there is a vacume pod hose more than likely came off engages your worm gear in front end . Happened to me put a clamp on it won't fall off again has worked for me for over yr now .

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