Question about 2001 Chevrolet Blazer

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98 Jimmy 4WD clunk

I had a new transmission installed in March of 08. In12-08 when I needed 4WD it just makes a hard clunking noise. It drives fine in 2WD. What should I be looking at? Transfer case? Accuator?

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  • Gloeckz Jan 15, 2009

    i also have the same problem in my 2000 blazer fine in 2wd and clunks rapidly in 4wd? What would it be? Its really annoying.

  • rayenc11 Jan 27, 2009

    The transfer case fluid is fine, when I go to 4wd it clunks hard and won't drive. put it back into 2wd and it is fine. I thank you for the response. Bob

  • rayenc11 Jan 28, 2009

    Thank You for your response, I had it looked at a transmission shop and bad news it is the transfer case. For the case out of a "recyceling" yard or what I call a junkyard,is 250.00. I guess thats not bad if I keep the truck , but the truck is in pretty bad shape so I just made somebody alse the proud owner of a " mechanics special!" Thank You again for the response. Bob

  • Jack Iaria
    Jack Iaria May 11, 2010

    Have you checked the Transfer Case Fuid?

    Does it clunk constantly?



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It seems like no one else hear at FixYa is responding yet to both your requests about clunking in 4wd.
I see two 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!
98 Jimmy 4WD clunk - c04bf14.jpg jackiaria

Posted on Jan 28, 2009


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