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I have a suggestion. You might want to check your vacuum hose, and vacuum switch. My 4WD was inoperable. If you don't use your 4wd enough you can get dry rought on the hose. That may need to be placed, or check your vacuum switch which is located on the driver side in the transfer case. Might need relplaced, or take it off, clean it reteflon it, and tighten in back down. As for the clunking Might want to check it out at a Transmission shop.

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โˆ™ 2007-08-30 07:34:21
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Q: Your 4x4 is not working in your 2000 Chevy zr2 blazer a lot of clunking happens in the front end any suggestions?
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