Question about 1994 Chevrolet S-10 Blazer

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Can't get wire to electric switch to make connections when plugged it back up on 94s10, 4 wheel, this plug is on transfer case, 4 wheel not working

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Posted on Jan 02, 2017

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SOURCE: Change fluid in transfer case

On the backside of the transfer case,as it sits in the vehicle.The plugs will be facing the rear differential.The one down low is the drain,while the top one is fill,of course.The fluid recommended is automatic transmission fluid,Dexron,and the transfer case is full when the fluid is at the bottom of the fill hole.

Posted on Jul 09, 2008

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SOURCE: 4 wheel drive on 1999 chevy blazer

99 chev blazer should have an electric motor not a vac switch...Is your controll on the dash a switch you turn.. or on the floor you shift ??

Posted on Jan 07, 2009

  • 7 Answers

SOURCE: transfer case problems on automatic

HELLO ???

CORVETTES ARE NOT 4WD

Posted on Apr 07, 2009

  • 5 Answers

SOURCE: 4wd won't engage on a 94 Chevy K1500

If you haven't got 12volts at the actuator(TLA) plug, then you are probably correct from what I have researched as well.
I have found a solution to the problem that would eliminate the need for 12volt power or a TLA.
http://www.4x4posi-lok.com/app_chevy-k.html
I keep blowing fuses on my 1997 GMC K1500 and think this switch may be the culprit for me as well.

Posted on Jan 24, 2010

  • 1311 Answers

SOURCE: Four-wheel drive not working. No

Was the transfer case fluid changed every 50K miles? This very important on these trucks. The Transfer Case Control Module (TCCM) could be at fault, especially since you have no lights on the selector switch. Is the Service 4x4 light on? When you switch from 2H to any of the 4 wheel drive selections, do you hear any actuator noises coming from under the truck?

Posted on Dec 09, 2010

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1 Answer

Why wont my 2006 expedition engage to 4x4 high 2wd awd and 4x4 low all work


I do hope you have electrical experience. The electric shift switch could be bad. Or a fuse could be blown in the fuse panel under the dash or under the hood. There is a control module, however I am not sure where it is on your model, that may need reset. These electric shifts have a tendacy to get out of time and or just go bad. Also the wiring leading to the transfer case could be corroded, You can unplug them and check by looking into both ends of the plug in. If you have someone that can help, Block the wheels and get under the vehicle near the transfer case and listen while the other person turns the key on and turns the switch. There will be a noise made by the electric motor that shifts the transfer case in and out of the different ranges. If you hear this, then the problem may be in the transfer case its self. Be sure to check the wires going to the transfer case are in good shape.

This is about as far as I can help without being there to see for myself. I hope I am not leaving anything out but I do wish you luck.

Oct 29, 2014 | 2006 Ford Expedition

1 Answer

2001 chevy blazer transfer case removal


How to Remove a Chevy Blazer Rear Transfer Case The transfer case on a Chevrolet Blazer is underneath the vehicle, mounted to the rear of the transmission. On four-wheel drive vehicles, the transfer case takes power generated by the engine and channeled through the transmission and directs it to the front and rear drive axles. Over time, the gears and bearings inside the transfer case can wear and the transfer case must be rebuilt. The transfer case on this vehicle must be removed before it can be serviced.
Things You'll Need
  • Wrench set
  • Floor jack
  • Jack stands
  • Socket set
  • Masking tape
  • Marker
  • Needle-nose pliers
Hide Instructions
  1. Removing the Driveshafts
    • 1 Disconnect the ground cable from the negative battery terminal, by using a wrench to loosen the retaining bolt and pulling the clamp off the terminal.
  • 2 Raise the vehicle and support with jack stands placed underneath the frame.
  • 3 Drain the transfer case. Locate the drain plug near the bottom of the transfer case. Place a waste oil collection pan underneath the plug and use a socket to remove it. Once all the fluid has drained out, reinstall the plug.
  • 4 Remove the bolts that connect the rear driveshaft to the rear axle yoke using a socket. Lower the driveshaft, and slide it backward underneath the rear axle to disengage it from the transfer case. Remove it from the vehicle.
  • 5 Remove the bolts that connect the front driveshaft to the front axle yoke using a socket. Lower the driveshaft, and slide it forward underneath the front axle to disengage it from the transfer case. Remove the driveshaft from the vehicle.
  • Removing the Transfer Case
    • 6 Label and disconnect the electrical wires and vacuum lines connected to the transfer case. Use masking tape and a marker.
    • 7 Remove the transfer case shifter rod. Using needle-nose pliers, remove the clip that connects the shifter rod to the transfer case. Slide the rod away from the transfer case.
    • 8 Position a floor jack underneath the transfer case. Raise it enough to take the weight of the transfer case off the transmission.
    • 9 Remove the bolts that connect the transfer case to the transmission using a socket or wrench.
    • 10 Slide the transfer case rearward to disengage it from the transfer case. Lower the floor jack, and remove the transfer case from the vehicle

    Jul 27, 2014 | Cars & Trucks

    1 Answer

    I have a 2002 Silverado 2500HD and the 4 wheel drive will not engage. It feels like it is going in within the transfer case. I was wondering if the hubs or vacuum lines were frozen. However, I have had it...


    it has nothing to do with vacuum there is a electric motor on your transfer case you will have to check the connector and see if it may be loose if it is not get a test light and back probe the plug get your wife to switch it into 4wd and test the circuit and see if it energizing if it is and it isnt shifting its your shift motor replaceit if it is not energizing its a relay,fuse,circuit breaker or bad wire

    Jan 15, 2014 | 2002 Chevrolet Silverado 2500HD

    1 Answer

    How to remove transfer case from 2002 tahoe


    • Disconnect the ground cable from the negative battery terminal, by using a wrench to loosen the retaining bolt and pulling the clamp off the terminal.

    • 2

      Raise the vehicle and support with jack stands placed underneath the frame.

    • 3

      Drain the transfer case. Locate the drain plug near the bottom of the transfer case. Place a waste oil collection pan underneath the plug and use a socket to remove it. Once all the fluid has drained out, reinstall the plug.

    • 4

      Remove the bolts that connect the rear driveshaft to the rear axle yoke using a socket. Lower the driveshaft, and slide it backward underneath the rear axle to disengage it from the transfer case. Remove it from the vehicle.

    • 5

      Remove the bolts that connect the front driveshaft to the front axle yoke using a socket. Lower the driveshaft, and slide it forward underneath the front axle to disengage it from the transfer case. Remove the driveshaft from the vehicle.

    Removing the Transfer Case
    • 1

      Label and disconnect the electrical wires and vacuum lines connected to the transfer case. Use masking tape and a marker.

    • 2

      Remove the transfer case shifter rod. Using needle-nose pliers, remove the clip that connects the shifter rod to the transfer case. Slide the rod away from the transfer case.

    • 3

      Position a floor jack underneath the transfer case. Raise it enough to take the weight of the transfer case off the transmission.

    • 4

      Remove the bolts that connect the transfer case to the transmission using a socket or wrench.

    • 5

      Slide the transfer case rearward to disengage it from the transfer case. Lower the floor jack, and remove the transfer case from the vehicle.


    Jan 20, 2012 | Cars & Trucks

    2 Answers

    2000 chevy blazer stuck in 4 wheel low is it the motor on the transfer case (on side or is it in the transfer case)


    The motor is on the transfer case on the drivers side..it looks like a sparkplug type of thing and has a 3-4 pin plug...they cost about 30 bucks and are very easy to change...there are some other posts in here that mention the actuator for this motor and it is under the battery...you may want to read up on this too, as this may be the problem also

    Dec 25, 2010 | 2000 Chevrolet Blazer

    1 Answer

    Transfer case removal


    first remove both front and rear driveshafts. Then remove skid plate underneath transfer case. Remember to unplug the electric motor wiring harness for explorers with electronic four wheel drive switching. Remove vacuum line on the top of transfer case. Unbolt Speedometer cable mount from top/rear of transfer case. Remove five bolts connecting the transfer case to the transmission, this step will cause some transmission fluid to leak from the shaft housing (approx. half a litre) so place a drain pan underneath. Remember to either place a jack or wood blocking under transfer case before removing the last bolt connecting the transfer case as it is heavy (approx. 80-90 lbs.).

    May 12, 2010 | Cars & Trucks

    1 Answer

    S10 blazer wont shift into 4 wheel drive and lights wont come on


    I have an 84 s-10 blazer and had the exact same problem. As far as not going into four wheel drive, I would bet that all you need is a transfer case vacuum switch. All you have to do is get under you truck and look on top of the transfer case: you will see three vacuum lines that all connect to the transfer case case vacuum switch. Just pull off the vacuum hoses, unscrew the switch, screw in the new one and reconnect the vacuum lines. Thats it. Oh and you can get the transfer case vacuum switch from Advance Auto Parts for like $16 and some change. Now as far as the lights not coming on, it is most likely the four wheel drive indicator light switch. It just a plug that screws into the front axle. Just unplug the wires, unscrew the switch, screw in the new one and plug the wires back up. But make sure you check the bulbs in the floor console first. Good Luck and I hope this will help you.

    Jan 25, 2010 | Chevrolet S 10 Cars & Trucks

    2 Answers

    4x4 wont engage


    the motor on the back of the transfer case may be stuck knock on the motor lightly with a hammer when switching the the switch May need a motor

    Mar 03, 2009 | 1999 Chevrolet Silverado 1500

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