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I've talked to a couple people to get some ideas on what to look for here, and maybe they'll chime in here too because one hit me with so many ideas/options I'm sure I'll forget half of 'em (chad) 
, so if it's in writing I can look at it more than once 
Info: '01 S10 Blazer 4x4. Not AWD. Push button 4x. under 75k. Haven't replaced too much at all on this thing, mostly all factory everything. It's been a pretty good truck, thus far.
Problem: It's been 'banging' or 'clunking' on downshifts like coming up to a stop sign/light. Hard down shift. Doesn't shake or anything, but it's quite audible. Sounds like either mid or front of the truck. It's done it on upshifts as well, however, it won't always do this, but it has been doing it more often, and more pronounced. I got it to clunk once today on a downshift. Additionally, it will also do it around corners, and I didn't really pay attention 'till tonight when it did it, but it for sure did it on a shift going around the corner.
I had it up to the corner shop to get some ideas, and they thought it sounded like it was coming from the transfer case, but I don't think they even checked the fluid or anything, and I really didn't get a positive vibe in talking with the mechanic that looked at it. After talking to a couple people, the thought is why would it be anything with the transfer case if it's doing it in 2wd? I wouldn't think ball joints would cause a 'clunking' sound on shifts? Possibly U-joints? Which in 2wd would narrow it down to 2 of 'em if I'm not mistaken? Tranny fluid was original, and didn't appear burned in color or smell, just normally used for the miles (never towed with it), and was swapped out today. Still clunks, as I figured it still would. Just lookin' for more ideas to be bounced around
TIA
, so if it's in writing I can look at it more than once Info: '01 S10 Blazer 4x4. Not AWD. Push button 4x. under 75k. Haven't replaced too much at all on this thing, mostly all factory everything. It's been a pretty good truck, thus far.
Problem: It's been 'banging' or 'clunking' on downshifts like coming up to a stop sign/light. Hard down shift. Doesn't shake or anything, but it's quite audible. Sounds like either mid or front of the truck. It's done it on upshifts as well, however, it won't always do this, but it has been doing it more often, and more pronounced. I got it to clunk once today on a downshift. Additionally, it will also do it around corners, and I didn't really pay attention 'till tonight when it did it, but it for sure did it on a shift going around the corner.
I had it up to the corner shop to get some ideas, and they thought it sounded like it was coming from the transfer case, but I don't think they even checked the fluid or anything, and I really didn't get a positive vibe in talking with the mechanic that looked at it. After talking to a couple people, the thought is why would it be anything with the transfer case if it's doing it in 2wd? I wouldn't think ball joints would cause a 'clunking' sound on shifts? Possibly U-joints? Which in 2wd would narrow it down to 2 of 'em if I'm not mistaken? Tranny fluid was original, and didn't appear burned in color or smell, just normally used for the miles (never towed with it), and was swapped out today. Still clunks, as I figured it still would. Just lookin' for more ideas to be bounced around
TIA
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