Question about 1993 Chevrolet S-10 Blazer

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4x4 not working 0n 91 chevy pickup k 1500

I know it is my actuator on my truck but is there a wat to test it or is there something i can do to bypass this actuator so my 4x4 will still work.

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  • kcshep May 19, 2009

    thanx guy i think the actuator on my truck ic electronic with the vac on the top of were it screws in with its own two wires.not sure though

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The actuator can be tested with hand vacuum tester. I don't believe it will work without the actuator.

Posted on May 19, 2009

  • Nate Stansfield
    Nate Stansfield May 19, 2009

    There is a switch on the top of the transfer case. You should be able
    to check the voltage at the actuator to see if the switch is doing its
    job. Also if your cv half shafts are bad that can keep it from going
    into 4wd.

    You can quickly apply 12 volts to actuator. If it moves back and forth, it is good.


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SOURCE: 4x4 not working 0n 91 chevy pickup k 1500

http://www.4x4posi-lok.ca/ this is a website that sells cable style actuators for the chevy pickups. this replaces the thermal actuator with a push pull cable they also sell permanant locks but be forewarned a permanant lock will hurt fuel economy a little. a cable also lets you put your transfer case into 4 LOW and lets you leave the axle disconnected if you need the extra power but do not need the 4wheel drive to work.

Posted on May 19, 2009

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http://www.4x4posi-lok.ca/ this is a website that sells cable style actuators for the chevy pickups. this replaces the thermal actuator with a push pull cable they also sell permanant locks but be forewarned a permanant lock will hurt fuel economy a little. a cable also lets you put your transfer case into 4 LOW and lets you leave the axle disconnected if you need the extra power but do not need the 4wheel drive to work.

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