Question about 2000 Chevrolet Silverado 1500
I just replaced the automatic transmission and now when I drive on bumpy roads something is knocking below the cab. I'm assuming something isn't tight enough or mounted entirely. It seems pretty clear that something is moving around too freely. The truck never made this noise before swapping the transmission. I'm not sure exactly where its coming from except below the cab because I have to be driving it to notice it. Not positive whether it is the the transfer case or the drive shaft and seeking to learn where the knocking is coming from and how to fix it.
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Posted on Jan 02, 2017
One thing to check, which is often the culprit in these situations is the U-joints. With the truck off, crawl under the vehicle and grab hold of the shaft leading into as well as the shaft going out of your transfer case, If htere is a lot of "slop in it, chance are it is in need of repair. Also I would check the oil level in the transfer case, in an attempt not to challenge you intelligence, there should be a plug located in the lower part about 2 inches from the bottom or so. it usually has a square hole that a 1/2" ratchet fits into. Pull the plug, and stick your pinky into the hole, you should be able to feel the lubricant just below the hole, if not it is in dire need of a filling. also check for metallic remnants in the fluid. this is a sign that things are not as they should be. In that case contact a repairman for a more thorough look.
Posted on Jul 13, 2009
It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn.
Posted on Mar 19, 2009
SOURCE: transfer case noise
your u joints are gone.it is common on gm trucks,as they are a sealed unit and the needle bearings rust .there are replacement u joints available that have grease nipples on them. there should be very little play,less than 1/8 inch.
Posted on Jul 14, 2009
Sounds like you got it. They are heavy and ocward (spelling?). As for the front drive shaft take the bolts out and give it a couple of wacks with a dead blow hammer then slide it out. Maybe a few days before hand give it a good spray down with wd40 or like product. Also when you get to the last bolt for the t-case to trans loosen it half way then put a drain bucket under it and seperate it a little and let the trans fluid drain some, or you will be wearing it.
Posted on Dec 23, 2009
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