Question about 1997 Chevrolet Blazer

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What would cause my transmission to be stuck in 4 wheel drive mode?

4.3 Vortex engine. Was working fine until I put it in 4 wheel High mode and now when I tried to return to 2 wheel mode, the light flashes and a clicking noise is heard in center shifting area. Does not return to 2 wheel mode or go into 4 wheel low mode.

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I have had this happen with mine. Backing up slowly, has worked for me.

Posted on Nov 29, 2014

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Likely the encoder motor on the transfer case is stuck. there's a bushing that gets worn out and causes this. You may have some luck by trying to disengage 4wd while backing up and engaging 2Hi.
Otherwise you are looking to replace the encoder motor. this involves removing the front driveshaft and a few bolts and an electrical connection. You can buy a new one, or you can pick one up at a salvage yard or Ebay fairly cheaply. The good news is that it's an easy fix that doesn't require any loss of fluid or even the need for a jack or hoist if you can wiggle under the truck. At worst, a pair of car ramps or a set of jack stands and a jack on the drivers side will give you plenty of access...just make sure to chock those wheels and/or set the emergency brake if it works. Hate to have it come rolling down on you while you are under there!

Posted on Nov 29, 2014

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Posted on Jan 02, 2017

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SOURCE: 4 wheel drive wont swich back to 2 wheel drive

After reading some of the fixes here and on other forums,i bought a vacuum actuator and a transfer case switch.My mechanic came to fit these today,replaced the actuator and it didnt do anything.Turned out the old one was o.k..He couldnt find where the case switch went ,so he started tracing the vacuum pipes.
Guess what? he found not one ,but two broken pipes.he replaced/shortened these and hey presto,i now have 2,4 hi,4low and auto all working again.
It may be worth checking the vacumm pipes before buying other parts.
Just a thought...........

Posted on Dec 10, 2008

  • 180 Answers

SOURCE: 4 wheel drive not working

Vacume lines or vacume switch on transfer case,or vacume pod to front axle.

Posted on Jan 07, 2009

billie17
  • 84 Answers

SOURCE: 1999 Chevy Suburban wont kick into four wheel drive

if it is electronic there is probably something wrong with the wiring..

but if it is manual...it might be the actuator........



Posted on Feb 11, 2009

messstat
  • 365 Answers

SOURCE: My 2001 Chevy Blazer ZR2

have a trans shop check the linkages/sensor should be cheap unless linkage is damaged from 4wheelin
Good Luck

Posted on Jun 14, 2009

  • 2 Answers

SOURCE: My 98 s10 is stuck in 4 wheel drive low.

Pull the kick panel on the passenger side. there is a small box mounted there that is the computer that controls the actuator for the 4wd system. this is notorious for problems due in fact that the connector likes to pull out and away from the module. I had the same problem and the solution is simple.. take a long zip tie and get it between a few of the wires and around the module. tie it in and have a nice day.. it wont come off or try to pop out anymore and you should have no issues getting into 2wd, 4wd h, 4wd L.


Posted on Jun 21, 2009

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1 Answer

4 wheel drive mode stuck. Please help!


Why can't the mechanic fix it? I could pull the motor and put you in two wheel drive. You could need a module, but most likely it is a ground problem. Could be a motor problem also. Find another mechanic that can disgnose lctrical problems.

Nov 10, 2014 | 1999 Mitsubishi Montero Sport

2 Answers

What gear should i drive in snow and ice


Depends, do you have 4 wheel drive? If so you can just use 4 wheel high, or if things get really slippery, use 4 wheel low and go slow, both in the drive position on the transmission shifter.

If 2wd, just use drive and go slow, again, if it gets slippery out, you can shift down in gears to go slower and to keep your speed slow.

If you're talking about snow and ice on just streets, then stick with 4 wheel high with 4x4, or "drive" in 2wd. You typically don't want to switch to 3,2, or 1st gear at highway speeds.

If you're playing in the snow, just use 4x4 high until you get stuck, then switch to 4 low to get out.

The only time I switch gears with the transmission (from drive to 3,2, or 1) is when I want to go really slow and keep it there. However, when I "play" in the snow, it's Drive only.

Does this answer your question? If not, let me know! Thanks

Jan 11, 2011 | 2003 Chevrolet TrailBlazer

3 Answers

Wont disengage out of 4 wheel drive 1998 ford ranger first time its stuck in 4 low we have backed up turned switch numerous times shut it off and restarted


Be sure to put the truck in neutral, while engine is running, while you disengage from 4 wheel drive (low) to 4 wheel drive (high) and then finally to 2 wheel drive. It is critical to shift transmission into neutral when switching out of 4WD Low, as indicated in your owner's manual. Hopefully, this will help to FixYa problem!

Oct 14, 2010 | 1998 Ford Ranger SuperCab

1 Answer

I cant get my 2000 durango out of 4x4 high lock


Put your transmission in nuetral then shift back to 4 high then put in park and back to drive.
Lone99star

Apr 29, 2009 | 2000 Dodge Durango

2 Answers

2001 Dodge Durango stuck in 4 wheel-Low. Won't switch back to 2WD


Just to clarify, the "transmission" is not stuck in 4-Lo. It is the "transfer case" that is attached to the transmission that actually engages the 4-Hi and 4-Lo modes. To properly shift your vehicle into 4-Lo, you know that you have to shift the transmission into neutral and slow down to less than 5 mph. Once your vehicle slows down to this range, your can switch your transfer case into 4-Lo mode. Due to the inner workings of the transfer case, the actual shift into 4-Lo may take a few seconds to complete. This is normal and does not signify that there is an issue. All transfer cases that have 4-Lo mode will act this way regardless of the make or model. To make a long story short, to shift out of 4-Lo you must follow the same steps that you took to shift into 4-Lo, just in reverse order. Switch the transfer case to 4-Lo mode if it isn't already there. Slow down to less than 5 mph (your vehicle must be moving, though). Then, shift your car into 4-Hi or 2WD. Give your vehicle several seconds to complete the shift. The transfer case indicator light will flash until it is complete. When it does complete the shift into the new gear mode, you will most likely hear a "clunk" (the range sleeve inside the transfer case disengages from its mating spline) from under your car. Again, any transfer case with 4-Lo (regardless of make or model) will exhibit this same noise. This should help you get out of 4-Lo. It is good practice to shift your car into and out of 4-Lo at least a few times each year to keep all of the splines free of corrosion and build-up. Based on the age of your vehicle, your transfer case may also need a complete flush and some new transmission fluid. Hope this helps.

Feb 22, 2009 | 2001 Dodge Durango

1 Answer

4 wheel low works but 4 wheel high does not.


sounds like the encoder on the side of the trans on the drivers side

Nov 24, 2008 | 1999 GMC Jimmy

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