Question about 1994 Chevrolet K1500

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1994 chevy silverado with manual transfer case, will not lock in 4wd, why?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

shaggyrat
  • 1224 Answers

SOURCE: 99 silverado 4wd went out... transfer case?

a little tip a friend gave me in unlocking the 4wd drive on ramps or hill and then put in neutral let roll back a foot put in park and then let off the 4wd
when in 4wd the hubs get a little heated cause they need greased so they stick into position making it hard to come out of 4wd this which i spoke of i got stuck in the senerio where i almost drove home in 4wd from 300 miles away but i called my friend he told me bought this and so i thought it could help you

your hubs just locked up on you your bearings are going to need to be packed again this is normal for this

hub

Posted on Dec 06, 2008

  • 7 Answers

SOURCE: 2003 Chevy Silverado Transfer Case

well make sure it is the tranfercase because if it was u wouldent have 4wd and u wouldent be able to drive it but it would be cheper to rebuild it but make sure first because some people are just out for your money good luck

Posted on Feb 02, 2009

  • 10 Answers

SOURCE: 1996 chevy silverado z71 electronic transfer case wont work

It's the transfer case vacuum switch. Easy fix.

Posted on Jun 17, 2009

robslac24
  • 2 Answers

SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light

Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

Posted on Sep 16, 2009

  • 5 Answers

SOURCE: 1994 chevy 4wd transfer case locks in but front

If the light shows that you are in 4L or 4H it is most likely the TLA or thermal electric actuator. They are heated electrically to cause a pin to eject about an inch to push a fork in the front diff to connect the right and left axles, thereby giving you 4wd. When the TLA doesn't work, your front axle won't engage and 4wd won't work. They are prone to not work in cold conditions as they are thermally actuated. Here is a site for a product that helps eliminate the TLA and the need for 12volts..
http://www.4x4posi-lok.com/app_chevy-k.html
Another possibility is a blown fuse, in my 97 GMC it is #24 in the panel and it is 25 amps. If the fuse is blown the actuator won't work.
If this doen't work I have other suggestions for it not working.

Posted on Jan 24, 2010

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How does my 4x4 push button locker work in my 1989 chevy K1500?


That depends a lot on how your truck is equipped. GM uses several different 4 wheel systems including AWD, Part-Time 4WD, Full-Time 4WD, and ON-Demand AWD. Then there is another version used on some trucks that is a combination of 4WD and On Demand AWD. - it gets a little confusing but each system as slightly different charachteristics.

Genericly speaking, if you have the push-buttons on your dash that say "4-HI", "4-LO", and "2HI" and/or Auto-4WD , the transfer case has an electronicly-controlled stepper motor which shifts the transfer case into the selected mode. An electric solenoid/actuator then engages/disengages the front differential for 2-Wheel or 4-Wheel modes. One push of the button and it shifts the transfer case and engages the front differential.

That's much easier than the old days when you had to stop the truck, get out (Sometimes in the middle of a big mud hole) and lock the front hubs then get back in and play with the lever in the floor to get the transfer case to shift into the desired mode.

Oct 22, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

01 Chevy Silverado 4 X 4 not working. 4WD light


Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

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sound like electrical problem in igntion switch. check all wiring to transfer case electric motors . to the 2 to 4wd switch.

Feb 18, 2009 | 2001 Chevrolet Silverado 1500

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2003 Chevy Silverado Transfer Case


well make sure it is the tranfercase because if it was u wouldent have 4wd and u wouldent be able to drive it but it would be cheper to rebuild it but make sure first because some people are just out for your money good luck

Feb 02, 2009 | 2003 Chevrolet Silverado 3500

1 Answer

99 silverado 4wd went out... transfer case?


a little tip a friend gave me in unlocking the 4wd drive on ramps or hill and then put in neutral let roll back a foot put in park and then let off the 4wd
when in 4wd the hubs get a little heated cause they need greased so they stick into position making it hard to come out of 4wd this which i spoke of i got stuck in the senerio where i almost drove home in 4wd from 300 miles away but i called my friend he told me bought this and so i thought it could help you

your hubs just locked up on you your bearings are going to need to be packed again this is normal for this

hub

Nov 19, 2008 | 1999 Chevrolet Silverado 1500

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