Question about 2001 Chevrolet Blazer

4 Answers

2001 Chevy Blazer 4 wheel drive

So my four wheel drive went out, i had a mechanic replace the push button on the dash, was told that wasnt it and it was the actuating motor. So I replaced it, it does the same thing it did before. It starts in four wheel drive, and if i hit the auto four wheel drive button then the two wheel drive button it tries to but then turns off completely till the car is restarted.. I have no idea what is wrong with it, i'm going to take it to a shop to have the four wheel drive read by one of those computers and see what it says, any ideas though????

Posted by on

  • 7 more comments 
  • Anonymous Jun 07, 2008

    my truck does almost the same thing except it goes into 4low by its self all the time and is hard to get back into 2high so i removed the fuse to stop the 4wheel drive from working all together it has to be something in the electrical.

  • upkerry Aug 07, 2008

    my 2001 blaser 4 wheel drive was working fine but now when i push the button for four wheel i don't see the light and dose not go in 4 wheel check the fuse and that was ok

  • joeldunstan Nov 10, 2008

    I have a 2000 Blazer and have had the actuator motor replaced as well. My problem is that it says on the dash the 4 wheel drive has engaged , but in actual fact it hasn't. It sounds like it has but no go.

  • cvrstairs Dec 01, 2008

    my 2001 blazer will not lcok into 4 hi or auto 4. the lights just blink. you can hear it try to shift over but it will not fully engage

  • Anonymous Dec 17, 2008

    but only light on is 4 wheel drive service and nothing clicks or comes on when pushing 4 wheel buttons

  • jj17 Dec 27, 2008

    says its in 4 wheel drive but nothing happens

  • scottvk Jan 24, 2009

    I tried Mikehumble's solution to the no 4hi engaging problem by resetting the 4wd computer. Now it only works in 2hi (4lo donesn't respond any longer, even though it worked before, bot I could only do 50k). All 3 led's light up when ignition is turned on, now neither 4hi or 4lo respond to being pressed. Any ideas?

  • scottvk Jan 24, 2009

    Oops, I checked again, and I didn't follow Mike's instructions properly. I pulled the cur.light and 4wd fuses, not the atc. I tried it again, pulling the light fuse by the wheel, and the atc fuse under the hood, but I still have only 2wd. The 4wd fuse is fine, but I think my misteak messed something up?? Any suggestions?

  • Anonymous Mar 25, 2009

    yep the exact same problem . i was told their is a way to manually put it in 4 wheel drive?

×

4 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sniper:

    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

  • Expert
  • 124 Answers

The four wheel drive systems in these vehicles are simple. The push button controls the four wheel drive computer. The computer tells the encoder motor (on transfer case) to shift. When the transfer case shifts there is a vaccum switch on the transfer that is activated which sends vaccum to the accuator under the battery. The accuator pulls a cable to lock the front axle in. This covers all s series trucks and suv's with push button four wheel drive but not with auto or all wheel. Now to answer some questions. If your push button is lit up but will not go in to four high you should try to reset the four wheel drive computer. To reset pull the courtesy light and atc fuses for sixty seconds install fuses then cycle key on and off 5 times. If your transfer case shifts but your front end does not lock in check for vaccum at the switch on the transfer case in and out. If no vaccum out replace switch motormite number 49315 at parts store. If you have vaccum out check accuator.

Posted on Dec 04, 2008

  • DONALD
    DONALD Sep 23, 2014

    OK SIR I SAW THE ACCUATOR ACTIVATED . I HAVE VACCUM BUT THE PUSH BUTTON CONTROL ONLY LIGHT UP WHENI TURN THE KEY ON THEN ALL THE LIGHTS GO'S OFF AND THE VEHICLE WHEELS ARE IN FOUR WHEEL DRIVE.

×

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

You can also check the vacuum lines and diaphram that are located underneath the battery shelf. Comes out really easy. Check that the lines are not broken. There is a vacuum line that runs to the solenoid in the center of the fire wall, as previously stated by 'speedfreek' and there is an actuator cable that runs to the transfer case. Sometimes it is as easy as replacing the vacuum hose, or the diaphram under the battery shelf went bad. If you ever had a battery leak acid because it went bad.....that acid goes under the shelf and eats those lines.

Posted on Aug 16, 2008

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

CHECK THE SOLENOID ON THE FIRE WALL THATS WHAT I FOUND WRONG WITH MINE.ITS ABOUT DEAD CENTER AND HAS 2 VAC LINES COMMING FROM IT

Posted on Jun 09, 2008

  • DONALD
    DONALD Sep 23, 2014

    SIR MAY I ASK THIS, I DID FIND SOME OIL IN SOME OF THE VCC LINES I WILL REMOVE THE LINES DO YOU KNOW THE MUCH VACCUM ARE IN THE LINES TOTAL FOR I CHECK THEM

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Make sure that the pine on the selenoid is not bent!!!

Posted on Nov 22, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I have a 2001 chevy blazer with a 4.3L v-6 with electronic 4 wheel drive. It is shifting from 2-high to 4-low after a short drive from beginning point. I can stop the vehicle, put trans. shift into ne


When I had this issue it was loose connections inside the switches/buttons on the dash. Before doing an expensive repair try replacing the switches/buttons unit on the dash

Oct 04, 2014 | 2001 Chevrolet Blazer

1 Answer

Chevy blazer problems


Hi Cecily,
There are several parts to a blazer 4x4.
First is the transfer case,When you push the button for four wheel, can you hear you it locking up,by pushing the buttons from 4x2 to 4x4 ?
If you here a slight clunking sounds its working. Next Blazers now have to lock in the front wheels. This is done by a vacuum assist. There is a vacuum line from the engine that runs over and under the battery.If it looks like it is attached at the engine, The next part is harder. You need to remove the battery to expose the servo valve that the vacuum is suppose to work.You can start the engine before taking the battery out, it will stay running. Pull the vacuum off the servo to see if its moving.if not replace it. if it is moving, there is a small relay mounted on the fire wall in the center of the fire wall, replace it.

Feb 03, 2014 | Cars & Trucks

1 Answer

Put car in 4 wheel drive (pushed button) and now can't get in back into 2 wheel drive what am i doing wrong?


if you went to four low then you will need to be engine running with the transmission in neutral, to go back to 2 hi if it is in 4 hi then its not you it is something else because it is a shift on the fly system for two and four hi in any gearrange

Dec 18, 2010 | 2001 Chevrolet Blazer

2 Answers

I have a 1996 chevy blazer and dont know how to disengage from four wheel drive to two wheel drive?


As I recall the 96 blazer had electronic shifting for 2wd to 4wd. There should be a small panel on the drivers dash buttons for 2wd, 4wd lo and 4wd hi.

Simply press the desired button while stationary and if the system is functioning properly then it will shift and the light for the engaged type of drive will be lighted. Generally you would like to be in 2wd for this vehicle.

Mar 10, 2010 | 1996 Chevrolet Blazer

1 Answer

Have a 2000 chevy blazer 4x4. Checked out the push button 4 wheel drive before we had snow (cpl month ago) worked fine. went to use the auto 4x4 it just flashed and went back to the 2 hi tried 4 hi did the...


try pulling the fuse for the 4wd and see if it needs replacement if not leave it out for a few minutes before replacing it as this will allow it to reset .

also check all the vacuum lines and especially
" dry-rotted " ones replace and re-connect if disconnected as well as any missing connections

Feb 10, 2010 | 2001 Chevrolet Blazer

1 Answer

1998 Chevy Blazer 4x4, $ wheel drive won't work (both 4hi & 4lo )


Reset the computer by disconnecting the battery. This should solve this. nutetral is for the four lo only to engage.

Mike

Jan 26, 2009 | 1997 Chevrolet Blazer

1 Answer

1994 chevy s10 blazer 4x4 push button type


small sylinoid on the top of the transfer case needs replaced. easy to do. it has three vacumelines going to it just trun out and replace like a bolt.

Dec 10, 2008 | 1994 Chevrolet S-10 Blazer

1 Answer

Stuck in two wheel drive. I changed my front wheel bearing the four wheel drive went out. The four wheel drive lights on dash blink then go out. Service 4 wheel drive comes on. Is there a servo that...


There is an electric motor that engages drive.  Mine was stuck and a mechanic beat it w a hammer while I was in vehicle w brake on in drive pushing the diff 4wd buttons.  It freed up and started working fine!!  It looks like a small starter under car on passenger side. Or buy one on ebay  for cheap and replace it

Jul 21, 2008 | 2000 Chevrolet Blazer

Not finding what you are looking for?
2001 Chevrolet Blazer Logo

9,774 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70387 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6878 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...