Question about 1994 Chevrolet S-10

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My 94 S10 will not totally engage into 4 wheel drive. When the button is pushed, you can hear in engage, but when the back tires start to spin, the front tire hardly move. I've been told it is a vacuum line. Is that correct?

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These problems almost always involve vacuum lines. Check all the vacuum lines you can find for disconnected hoses, and hoses that are cracked, weathered, or mushy or soft to the touch. There is one hose that runs to a vacuum pot or actuator under the battery tray. It falls off the actuator quite frequently because the hose gets hard and loses it's flexibility, and it has to make a 180 degree turn to connect ot the actuator. You will have to take the battery out and remove the battery tray in order to reach the hose. If, after all this, you still have problems, look for a loose connector underneath the truck. Let me know if this helps.

Posted on Dec 31, 2010

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