Question about 1994 Chevrolet S-10 Blazer

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Four wheel drive not working on 1994 chevy blazer

All fuses in fuse box is good so is the relay fuses wondering if it could be vacume lines

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  • hacksawkid20 Jan 08, 2009

    four wheel drive on my 1994 chevy blazer could vacume lines be the cause to no power

  • hacksawkid20 Jan 08, 2009

    1994 chevy blazer four wheel drive will not work at all fuses are good relay swiches are good anybody know what may be the problem

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Have the same problem among others, checked the vacum lines and not the answer. I cut a hole in the floor board on the passenger side of the tran. hump and checked vacum lines to the acutater no kinks ect., its a wonder the way they have them squeezed in between the firewall and the motor the same way they have the distributer jamned back there. Did you ever change the trany filter that they suggest every 30,000 what a joke. And if you ever need to change the heater core get the sawsaw out and cut threw the dash to get to it its the easy way. So my solution is to run your blazer into the the nearest pine tree dont waste a good hard wood tree.

Posted on Jan 18, 2009

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Could also be the actuall vaccum actuator at the front drive axle, located on pasenger side. if you locate this and hook direct vaccumto it from the motor then drive it you should have 4x4..... if you do then it isnt the actuator, its the lines which run to the driver side of the tranny. In this case they are probably rotted and leaking

Posted on Jan 09, 2009

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Yes it could be a vaccum line, my friend had the same problem and his vaccum line was pinched shut. I think it was located somewhere under the battery.

Posted on Jan 09, 2009

  • fredrick mick Nov 17, 2011

    I am haning the same problem. 4x4 won't lock the front wheels. The shifter goes right in but the light on the display won't light up the wheels on it nor does the front wheels spin. I recently had the engine apart and replaced the radiator, intake manifold gasket, head gaskets and so on. I must have caused the problem because it worked before. If anyone has any ideas. One guy said under the battery?

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