Mechanics

CHEVROLET BLAZER NOISE PROBLEM

2000 Chevrolet Blazer • 185,000 miles

I have a 2000 Chevy Blazer that has been in the shop at least 5 times now. The problem is that periodically it starts making a very loud siren, helicopter type noise which gets louder at speeds below 50 mph. The auto tech people say they cannot determine what it is unless they can hear the noise, etc. So of course after I get it to the shop it doesn't do it. It sounds like it's coming from the front right side. They have checked the wheel bearings/hub and say that they are not bad. Most recently they replaced the radiator fan clutch assembly because I thought that might be the problem. But the noise is back and louder then before, so that was obviously not the problem. I have had new tires put on just recently and it drove fine for about a week, no noises, etc. Then suddenly out of the blue, they are back again and seem to be lasting longer than before.

It seems to be worse when slowing down at speeds of between 25 mph and 40 mph. And there is just a slight vibration in the steering wheel, but not that bad. I am about to lose my mind trying to figure out what this could be. I'm afraid to drive it because I think it may be causing more damage to whatever is going bad. It is really discouraging because I am having to research what the problem could be, when it seems that should be the auto shop's job.

Any help would be greatly appreciated. Thanks!

Kim
Avatar
Khaller
December 25, 2012.




Did you ever find the cause of this noise? I have a 2000 s-10 pickup with the same symptoms.

Thanks,
Will


Tiny
Wlane
Mar 6, 2015.
Will,

No, I did not find the cause of the problem after having many things replaced. But about 3 months ago, the noise just suddenly stopped and now my 4 wheel drive isn't working. That's okay though, I rarely use it. So, my guess is that it was switching itself into 4 wheel drive while I was driving at higher speeds and that was the cause of the "helicopter noise." Good luck with your problem, I hope it gets resolved and doesn't make you as crazy as mine did me!

Take Care!
Kim


Tiny
Khaller
Mar 6, 2015.
Thank you Kim. I have a 2001 Chevy Blazer that I had to have the 4 wheel drive computer module replaced in but it just stopped working all together and had no symptoms like you or I have experienced this time. I know that module was an expensive fix so maybe I will try unplugging the module to see if that stops the noises.

Thanks again,
Will


Tiny
Wlane
Mar 7, 2015.
YOU GUYS KEEP IT GOING

I'M ANXIOUS TO SEE WHAT YA'LL FINALLY GET FIGGERED OUT!
.
.
.

MEAN WHILE

MY "MODULE"

WILL REMAIN SEATED ON THE DRIVER'S SIDE

IT WILL SHIFT EVERYTHING

RELIABLY

AND

MANUALLY!

BOTH ARE STILL VERY PERTTY

I'VE BEEN TOLD BY YOUNGSTERS THEY LOOK A LITTLE OLD FASHIONED

I RECKON I'M LOOKING A LITTLE THAT WAY AROUND THE EDGES TOO

REGARDLESS, ALL THEM GALS,

YOUNG OR OLDER STILL TURN THEIR HEADS FOR A LOOK-SEE!

(THAT WHAT REALLY COUNTS ANYWAY. OTHER THAN LONG TERM, RELIABLE, GO ANYWHERE TRANSPORTATION!)

PIC 3) THE ONLY 2 WIRES TO THE STOCK 1977 TRANNY AND TRANSFER-CASE (MR. BACK-UP LIGHT SWITCH!)

I'M STILL AVAILABLE TO HELP YA'LL FIND A REAL VEHICLE, JUST LET ME KNOW!

THE MEDIC
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CJ MEDEVAC
Mar 8, 2015.

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