- #21 of 105
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Re: Humming Noise [lincoln6echo]
by repairdog
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Jan 18, 2007 (1:42 pm)
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Replying to: lincoln6echo (Jan 18, 2007 11:57 am)
No, 2wd need an 18mm box end wrench that is not a standard one in most sets (socket also not standard) for the 3 bolts and the caliper bracket. Plus the jack and jack stands.
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- #22 of 105
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Re: Humming Noise [repairdog]
by lincoln6echo
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Jan 24, 2007 (1:07 am)
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Replying to: repairdog (Jan 18, 2007 1:42 pm)
Repairdog, first let me say thanks for all your advice. Secondly, I successfully replaced my driver side hub assembly/wheel bearing. All bolts came off with ease(luckily). Once I replaced it, I went for a test drive, and it's so damn smooth and quiet- it's like driving a different car.
-Furthermore, I've discovered through research that this wheel bearing is the worst design ever made on this vehicle. One of the most common things to go on Blazers, unfortunately. I am so happy it's finally fixed! THANKS AGAIN....
-Lincolnsixecho
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- #23 of 105
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Re: Humming Noise [lincoln6echo]
by repairdog
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Jan 24, 2007 (3:48 am)
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Replying to: lincoln6echo (Jan 24, 2007 1:07 am)
Good to hear - but all vehicles are going to the 1 piece hubs for fast assembly and no service required till they fail.
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- #24 of 105
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Re: Humming Noise [repairdog]
by lincoln6echo
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Jan 24, 2007 (12:08 pm)
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Replying to: repairdog (Jan 24, 2007 3:48 am)
I heard about that....When I was doing a little research about blazer wheel bearings on different forums, all anyone had to say about it was, "they're only good for about 50,000 miles and they're soo damn expensive to fix, I'm going to sell my blazer because of this." Very dissapointing to hear in my opinion, because I dig my blazer....I sure hope other parts of the blazer aren't lacking the quality that the bearing is.$$$$$$$$$$
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- #25 of 105
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Re: Humming Noise [lincoln6echo]
by repairdog
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Jan 24, 2007 (2:24 pm)
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Replying to: lincoln6echo (Jan 24, 2007 12:08 pm)
Of the 4 Blazers I have the most went at close to 120,000 but after that many buy the cheapo Chinese ones that do fail. Timken and BCA seem to last well.
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- #26 of 105
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Re: Humming Noise [repairdog]
by lincoln6echo
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Jan 24, 2007 (4:35 pm)
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Replying to: repairdog (Jan 24, 2007 2:24 pm)
Yeah, Timken is what I bought to replace my bearing.
One other question for you. Is there anything else I should be ready for to go next that is common?
-2002, 2dr. 2wd. blazer 4.3L 51,900 miles
Thanks, Lincolnsixecho
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- #27 of 105
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Re: Humming Noise [lincoln6echo]
by repairdog
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Jan 25, 2007 (2:35 am)
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Replying to: lincoln6echo (Jan 24, 2007 4:35 pm)
Possible alternator and ac compressor around 75k but varies. Flush the cooling system 3/36 or 3/50k min (not 5/100 GM BS) or the Dex cool will clog things up and get a Stant cap and new 195 thermostat at the same time. Keep the overflow to Hot line when cold so no air gets in the system and you should be good. Do not forget the trans filter soon also (every 50k). Spray the door pins/bushings with white lithium lube to save those too. Finally when you do the brakes for those rears buy "loaded" brakes so you get rebuilt calipers/bracket/slides/pads cause the rears like to stick after just pads - good news fronts are tougher so just pads OK. Good news is the ball joints on 2wds are much bigger than the failing 4wd ones!
They have a few problems but handle well, take a crash pretty well with the frame under them, and ABS works well.
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- #28 of 105
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Re: Humming Noise [repairdog]
by jlflemmons
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Jan 25, 2007 (10:45 am)
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Replying to: repairdog (Jan 25, 2007 2:35 am)
repairdog, you are a wealth of information. I deal with a lot of questions over on the Hyundai board, but since we bought the kid a '99 2wd 4dr Blazer, I have been reading through your posts.
We bought one with 77K miles, but looks to have been well maintained. Swapped out the shocks (original) idler pulley and belt, and, of course, the stupid door hinge pins. I have never owned a car or truck where the pins have worn out. I guess oiling them a couple of times a year helps, but every Blazer/Jimmy we looked at had the bushings worn out. Strange. Next will be tranny service and coolant, then probably a muffler/tailpipe. Sounds like a baffle has let go in this one (also original). Engine is smooth, and tranny shifts as it should, so we will see where we go from there.
Once again, thanks for all your posts!
Jim
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- #29 of 105
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Re: Humming Noise [repairdog]
by lincoln6echo
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Jan 25, 2007 (12:33 pm)
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Replying to: repairdog (Jan 25, 2007 2:35 am)
This is great info! This will be on my "to do list". Can you tell me what this means tho--> Flush the cooling system 3/36 or 3/50k min (not 5/100 GM BS).
-Thanks. 
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- #30 of 105
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undercarage noises
by firstshirt1sg
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Jan 27, 2007 (9:12 am)
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Replying to: lincoln6echo (Jan 25, 2007 12:33 pm)
When I start my 2000 Chevy Blazer in the morning there is a loud ratting noise underneath as if something is loose but after the the vehicle idles for a minute or so the sound stops and is not heard during subsequent starts unless the vehicle sits for an extended period of time, it sounds as if it is coming from the exhaust but my investigations have revealed no leaks or loose part. Can anyone help?
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