Question about Chevrolet Blazer

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My 98 chevrolet blazer with pushbutton electronic transfer case will not go from 2wd Hi to 4wd hi it makes a awful grinding noise and the lights just flash. Then, it goes into 4wd low! I have to put it into neutral to get it back into 2wd Hi then. (which is normal to get back into 2wd hi from 4wd low)but all it does is make a loud grinding noise anytime I try to put it into 4wd Hi!

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Check out battery voltage. 

Posted on Jan 07, 2009

  • rockfixya
    rockfixya Jan 07, 2009

    did you check the voltage of your battery.


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Hi there
It sounds like the gear selector cog has broken teeth or has managed to become dislodged .
You will have to take the car to a garage to have this problem rectified

Good luck and kind regards

Posted on Jan 07, 2009

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Posted on Jan 02, 2017

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2 Answers

I have a 2000 Chevy Blazer I think its stuck in 4 wheel drive the buttons on the dash do not work or light up and it makes a weird and loud noise when you're driving down the road


On the kick board on the passengers side take the kick board off and there is a metal box with two nuts , take the nuts off unplug the box get a can of electronic cleaner spray at any auto shop. Spray the contacts on the box and spray the plug, let dry a few minutes and plug it in before you bolt it up start the Blazer and push the 2wd button it should light up. In my 2000 blazer I have to shut the motor off turn the key forward until the dash lights turn on
to get it out of 4wd . If that doesn't work go to www.youtube.com/watch and type in your problem click go and there is videos you can watch, that is what I do when something goes wrong with my Blazer, Also there is a Transfer Case Vacuum Switch that is probably bad it is hard to get to it is on top of the transmission it has three vacuum hoses one vacuum nose for 2wd 4wd and4wd low range. just a couple things you can check that usually fix this type of problem, I think the whining you hear is being in transfer case the book says this vehicle is not intender to operate at high speeds in 4wd.

Apr 13, 2015 | 2000 Chevrolet Blazer

1 Answer

1998 chevy blazer. Do I drive it in 2wd, 4wd hi or low what is the difference and can it do damage?


always drive in 2wd only use 4wd when traction could be a problem and 4wheel low when stuck or off road use

May 25, 2012 | 1998 Chevrolet Blazer

1 Answer

98 Jimmy 4WD clunk


It seems like no one else hear at FixYa is responding yet to both your requests about clunking in 4wd.
I see two requests....in the first a 2000 blazer from Gloeckz
there is a rapid clunking in 4wd!
In the second it clunks hard going in then won't drive!
This is rayenc11s' 98 Jimmy 4WD clunk I'm no trans specialist and not familiar with repairing or troubleshooting serious 4wd problems but it sounds like this may be a problem in the transfer case.

Since no one seems to be helping you but me I'd suggest you go to a transmission shop and ask them if this is a common problem that may lead to a bad transfer case if not corrected!

Make sure you have the proper fluid in your transmission case, transfer case and differential case first or have a quick oil change place check it for you!

Hope this is helpful.

Good Luck!
c04bf14.jpg jackiaria

Jan 05, 2009 | 2001 Chevrolet Blazer

3 Answers

Transfer case motor for push button 4x4


i have a 1993 blazer 4.3 w code 4x4 with a 4L60 E . my truck wouldn;t go in 4 hi or low. so i changed the transfer case motor and it works fine now. If you turn the ignition key to on but not crank the engine and open the driver door and push 4 hi button, you should hear the transfer case motor cycle for 3 or 4 seconds every time you push button and the light will flash until it goes in 4wd If the 4 hi button light doesn't flash during cycle then it could be a bad switch. if the transfer case motor won't cycle it could be a fuse or a bad transfer case motor . Hope this answers your question.
pgale89

Dec 16, 2008 | 1994 Chevrolet S-10 Blazer

2 Answers

1999 S10 blazer 4X4 problem


It sounds like you have a vacuum problem that will not let the plunger switch it between 4wd and 2wd you might try to check to see if you have a vacuum leak

Jul 28, 2008 | 2006 Chevrolet Blazer

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