Question about 2001 Chevrolet Blazer

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2001 blazer goes into 4 wheel by itself. Light on button stays on 2 hi if i slow down it will go back to 2 wheel but after a few minutes it goes back to try 4 wheel. I changed the tccm but now im thinking its the actuator under the battery because it seems like it doesnt release all the way but i really dont know for sure. Is that possible??

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Posted on Jan 02, 2017

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SOURCE: how to change 4 wd motor(actuator) 1997 s10

Before changing the actuator check the vacuum lines at the vacuum switch on the left side of the transer case if they are wet with transmission fluid the the switch is bad and that will prevent 4wd from engaging.

Posted on Jan 15, 2009

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SOURCE: 1996 blazer wont go into 4 wheel drive

Had the same problem I replaced all vacuum lines this fixed the problem

Posted on Jan 26, 2009

flacooo1
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SOURCE: 4 lo working, 4 hi stopped working , A4WD never worked

Hi my name is Juan and I do own a trailblazer with the same year 2002 and I read the problem you have let me try to help you Have you try to shift to 4hi with your transmission in neutral ? the transmission needs to be in neutral in order to shift the transfer case to 4hi and the vehicle needs to be completely stooped also is your service 4wd light on?? if the light is on your transfer case needs service and it can be as simple as the switch inside your car or a solenoid that has not been detected by the computer

Posted on Mar 30, 2009

  • 1 Answer

SOURCE: Blazer stuck in 4 wheel high

I had the same solution with 2005 blazer......dont know how but this worked...........removed the courtesy lifgt fuse for approx. 10 minutes....put fuse back in and voila..able to shift out of 4 wheel drive

Posted on Apr 20, 2009

  • 1348 Answers

SOURCE: air bag light stays on

check the fuses and wiring in the fuse box and the relay ,either that or the abs pump has a problem.

Posted on May 15, 2009

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Hi my name is chris i have a 2001 chevy blazer 4x4 for so reason it keeps putting itself into 4x4 when i stop at a light or stop sign and won''t let me put it back into 2 wheel drive ?
There's been a lot of problems with the 4wd systems on the blazers of that vintage. The only sure way to track down the cause is to have the system scanned. Some of the most commom causes are: the switch in the dash, - the control module, - the transfer case . There are other issues if it has auto 4wd as the ABS system is tied into that system to activate it when the sensors sense wheel slippage. If your blazer has the auto 4wd funtion and has a ABS light on, it could be in the ABS system.
IF you could get it back into 2wd, you could pull the fuse to the 4wd to dis-able untill you have a chance to have it scanned.

Jun 24, 2011 | 2001 Chevrolet Blazer

2 Answers

2004 chevy s10 push button 4whl will not go into 4lo not 4hi
First try disconnecting the battery for about 10 minutes. This will reset all of your electrical systems and perhaps fix the issue.
If this doesn't work then check the 4 wheel drive transfer case electronic module in the right kick panel on the passenger side for corrosoion. If any posts are broken are burnt they will need to be replaced.

Feb 26, 2011 | 2004 Chevrolet S-10

1 Answer

When drivingtruck in 2 wheel drive the 4 wheel low light will flash and when slow truck down to a stop it will shift into 4 wheel low and will not go back to 2 wheel high
Sometimes the solenoids will stick on the axle neither in 2 or 4 wheel drive, if this problem started when you weren't shifting between two and four wheel drive it is probably the push button switch cluster on your dash going bad

Dec 12, 2010 | 2000 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

How to get out of 4 wheel drive '93 blazer. Push button worked fine and it seemed to automatically come out of 4 wheel back to 2 wheel or was it because i tapped the 4 wheel low button? the 4 wheel high...
try put in to nutral hit 2 low then put in revers back up 50 feet put in to drive pull forward and you should be out of 4 wheel

Nov 17, 2009 | 2001 Chevrolet Blazer

1 Answer

The "service 4x4" light is on and 4 wheel drive does not engage. when in 2-hi and switching into 4-hi, the light on the 4-hi button will blink for a few seconds then go back to the 2-hi button. same...
The blinking is telling you there is a problem in the system. There isn't much to the system, so if you can get the codes out of if then report back and we can lead you in the right direction.
We'll need the code, Otherwise you'll just be throughing expecive parts at your truck.

Oct 18, 2009 | 2002 Chevrolet Blazer

3 Answers

My truck is stuck in 4 lo
pull atc 25 amp fuse in underhood fuse center and 10 amp 4wd fuse inside cars fuse box,your problem is in control box behind kick panel on pass. side ,corrosion build up,

Mar 06, 2009 | 2000 Chevrolet Blazer

1 Answer

97 S10 4x4, 2 Wheel light does not turn back on immediately
I had a 2000 blazer do the same and it was a vacuum hose leak by a little box in the middle of the firewall.

On my brother's blazer the hose leak was under the top part of the driver's side fender.

Feb 18, 2009 | 1999 Chevrolet Blazer

2 Answers

1996 blazer wont go into 4 wheel drive
Try replacing the vacuum lines that go to the transfer case from the engine. I had the same problem on a 95 Jimmy and was told to do it.... I changed every piece of vacuum hose that had anything to do with the 4x4 and it worked. Hope this helps you out

Jan 20, 2009 | 1996 Chevrolet Blazer

3 Answers

Blazer stuck in 4 wheel high
Well I replaced the Transfer Case Control Module and the 4 button selector swith on the dash, and my 20001 Chevrolet Blazer Lt is still stuck in 4whl. drive high. Does anyone have any advice on this, Ive also already checked all fuses under the hood and in the truck, all are ok.

Nov 24, 2008 | 2001 Chevrolet Blazer

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Hi my name is chris i have a 2001 chevy blazer 4x4 for so reason it keeps putting itself into 4x4 when i stop at a light or stop sign and won''t let me put it back into 2 wheel drive ?

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