Question about 1994 GMC Yukon

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Front differential has clicking noise when front tire is rolled, whinning noise when traveling around 60 mph . I replaced shife plunger, solinoid , but still makes clicking noise when tire is rolled over, so I backed off about 2 turns on plunger , clicking noise stopped. sounds like plunger going in too far but never heard noise until now. I thought about shimming plunger to shorten plunger from going in too far but do not want gear to not fully engage please give me your advise as what to do thanks Robert

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6ya6ya
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Posted on Jan 02, 2017

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Mikey108
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SOURCE: Starter or solinoid?

I never heard of a starter solonoid coming with shims. Did you replace the starter or starter solonoid?
What engine do you have?

Posted on Nov 20, 2008

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SOURCE: 1999 GMC SAFARI VAN REAR END HUMMING

This rear end needs to be replace or re-built


































This rear end needs to be replaced or re-built. The gears and or bearings are worn/shot. May be able to get a complete rear end from a Junk yard for much less, one in good condition. Good Luck






Posted on Dec 10, 2008

  • 6982 Answers

SOURCE: Front Differential Noise

There have been a large number of differentials with similar failures in the past ten or fifteen years. While many are the result of low fluid from leaks, a great number have also failed due to improper gear hardening during the manufacturing process. This usually shows up as a problem, mostly on the spider gears or spider cross-shaft. Unfortunately, metal generated internally, regardless of the source, causes scoring on all bearing surfaces, requiring a rebuild or replacement of unit (both expensive. If you decide to do this yourself, be aware that the gear ratio of the replacement MUST match the rear unit exactly!!! Any warranty remaining?

Posted on Dec 29, 2008

  • 1 Answer

SOURCE: 2000 Gmc Sierra. 4wd wont engage, buttons on dash just blink

I had the same prob with my 2000 GMC Sierra 4x4 z71. They replaced the 4wd module in the dash and everything worked after that. Was about $200. The part itself was about $150.

Posted on May 27, 2009

  • 149 Answers

SOURCE: whinning noise front front end

I have experienced whining differentials that lasted many years. Check that oil level though, but usually whining comes from bearings and/or bad alignment with the ring gear and pinion.

Posted on Jul 05, 2009

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2 Answers

My 2002 Grand prix makes a whinning sound above 35 mph and follow ground speed not engine speed


Hello Roger Letterly,

Besides NOT carrying many actual Auto-PARTS... AUTOZONE has an interesting trouble-shooting guide... FREE.

It has often perplexed me... but I have HUMORED it a couple of time just to see if there was some basic intelligence (there-in)...

You might want to LOGIN and give your vehicle a serious try.

Personally...
(highly dependent on your "WHINNING" definition)...
I would suggest the differential gears need to be checked for lube... and properly set-up (first guess)...

but the truth of the matter is everything from road surface to brake surfaces... all your bearings... power steering, water pump, alternator and even your tire tread can cause "WHINNING".

Give AUTOZONE's trouble shooter a try...

Then check your lube... ELSE

Consider buying the FACTORY workshop+repair+manual
to set up the gears in your differential... or take to a MECHANIC & have them professionally evaluated (estimated... FIRST).

Hope this helps.

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RockAuto Parts Catalog

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Jun 05, 2016 | Pontiac Grand Prix Cars & Trucks

1 Answer

Why am I hearing a wind deflection noise on my Lexus 2013 LS 460? noise seems to be coming around front od driver side dash or from side view mirror area..


Just an idea:
Try to check your tires inflation and size, They should have
the same tire witdth ans same inflation.

Apr 23, 2014 | 2013 Lexus LS 460

1 Answer

Jeep grand cherokee quadra drive


Differentials.

The Jeep Quadra Drive systems have a limited slip differential in the transfer case as well as the front and rear axles - which allows you to run all wheel drive on all surfaces. This matters because without limited slip capability your transfer case & axles would break.

Have your transfer case and axles serviced by a dealer, really a real dealer for Chrysler Jeep. These diffs and transfer cases can use unique gear oils that you don\'t want to mix up with regular gear oil.

That howling, clunking, grinding noise is your dog-clutches slipping (as designed) as you go around the corner.



Additional Details below:

So what\'s the Diff?



All differentials are is a way to allow for different wheels to travel different distances on the same vehicle. What-he-say? Yep, when we turn a corner all 4 wheels go a different distance around that corner... oh yeah well everybody knows that. Think about it, your making that hard left turn at your favorite Fast-Food joint; your left front wheel is 2 feet away from the curb, but the back left wheel rubs the curb... why?

As you make that 90 degree turn, your left back wheel travels 4 feet, your left front wheel travels 6 feet, your right rear wheel travels 7 feet, and your right front wheel travels 8 feet.



Ok you say, what\'s the big deal? A couple feet slip here a couple of feet slip there... Well remember your sticky rubber tires on dry asphalt don\'t really give very much and u-joints, axles shafts, and even pinion and ring gear damage can occur. Fortunately for us, Leonardo DaVinci (yeah really) saw this problem coming and designed the Open Differential. There are mini-gears inside your open differential that allow for that slippage, these mini-gears are called spider gears. Problem is when your in snow, ice, mud the spider gears of the open diff allow all your power to go to the wheel with the least traction (and your stuck).

Ok let\'s put another powered axle up front and call it 4x4. Umm no.

A normal 4x4 is not really true four wheel drive. At best it\'s the worst 2 wheels you\'ve got - driving you forward. Until both wheels on the same side are in a ditch, and your stuck.



Well what the heck Leonardo? I want something better than stuck!



The old-time dragster dudes of the 50\'s & 60\'s agreed with you and they welded those little spider gears together for true positraction across both wheels. Ever been close to a big monster truck in a parking lot and heard its tires chirping around the corner? Or an old Jeep crow-hopping it\'s way around a corner - Letting out little tire noises (like "erp" "erp" "erp")?

That\'s because these 4x4\'s have been modified to not have any differential action. None. This is great in a 1/4 mile dragster race or a mountain climbing rally car. A locked front differential can (and most likely will) cause you to crash... not good for daily drivers.



You\'re in luck, the Limited Slip Differential (LSD) has clutches instead of spider gears, which engage as wheel slippage increases. Subaru and Audi are 2 companies that really brought this to market with All Wheel Drive decades ago. Jeep and other SUV/Pickup manufacturers have utilized clutch-based LSD\'s as well. Clutch-based LSD\'s however, have a limited lifespan and can require special gear oils. When Clutch-based LSD\'s fail, they basically become an Open Diff.



Automatic locking differentials were brought to market in the 70\'s & 80\'s by companies like Detroit Locker, and these engage a fully locked set of gears as soon as any slippage occurs. Problem is it can become very difficult to steer, at all. Forget about U-turns, just go around the block. And while your at it, stop and pick up another set of tires because it will feel like you are dragging your outside tires around every corner.



Jeep and Daimler-Chrysler developed another type of LSD that utilizes a small hydraulic pump to engage a set of clutches and gears, which lasts much longer than traditional LSD\'s. It was called a Gerodisc differential, and it worked fairly well. Not as much traction as a full locker, but good LSD performance. The problem was the Gerodisc couldn\'t control itself in the car-washes, and would build-up pressure as the tires slipped over the soapy rollers, and launch the Grand Cherokee across the car wash. Yeah, it was freaky. So freaky that the National Car Wash Association of America (yeah they have an association, who knew?) prohibited all Grand Cherokees. Look it up.



The King Daddy of differentials is the selectable locker. These little gems are very expensive, but you get all the benefits of both the open diff for maneuvering, and lockers for traction only when needed.



So that noise, while it may not spell imminent doom, surely ain\'t good.

Jan 02, 2014 | Cars & Trucks

1 Answer

I have a whining noise coming from my 1999 Mercury Sable. Starts at about 20 MPH and increases getting the loudest around 40-60 mph then holds steady, have shifted to nuetral and whining stays. I believe...


Could be anything connected with the front wheels.
So that includes hub-wheel bearings, axle joints, the differential gears, and the transmission.

Feb 23, 2013 | 1999 Mercury Sable

1 Answer

Humming noise from front left side


I hate to say it, but it sounds like something in the differential - transmission. The part about the noise and coasting fits a differential bearing noise. Making turns could put extra load on the bearings and gears in the transmission.

Sep 27, 2012 | 2005 Scion xB

1 Answer

2000 Chevy Blazer 4x4...started making a horrible loud noise after my cruise control went out. I have recently replaced my hub and the brake pads and the CV axle. The noise comes and goes and only happens...


does it get louder above 45-60mph? and much quieter at low speeds. It could be wheel bearings, a rear differential or front differential. If its a grinding humming noise its wheel bearings, listenin to see if theyre coming from the front or rear, left or right, or both when your driving to know what wheel bearing are bad. If its a whinning noise, its probably a differential. check and listen to hear if its coming from the front or rear. Also, check for loose plastic around the wheels. Lastly check your tires for uneven or choppy wear. move your hands front to back on the top of the tire. does it feel really choppy and rough, maybe you just need new tires

May 04, 2011 | 2000 Chevrolet Blazer

1 Answer

Two weeks ago I had my mechanic fix the leaking rear differential pinion seal. I am now noticing a loud whinning coming from the rear of the truck. When I take truck out of gear while rolling (above...


When a pinion seal leaks gear oil, dirt usually gets inside the gear case. The first bearing to get damaged is at the front of the pinion shaft. It's a standard practice to inspect it [ if any damage is noted, then investigate further ] when replacing the seal and change the gear lube as it's usually contaimiated. Another item is the tightness of the retaining nut on the front of the shaft which sets the pre-load on the pinion bearings, if this is set too tight it will cause the bearings to fail.
Sometimes the seal is just replaced without looking at anything, you should ask your mechanic.
Chances are there's a bearing failing, it will or has caused extensive damage. You Should have it checked ASAP.

May 04, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Noisie drive at 45 to 60 MPH


I'd be looking a the driveshaft ujoints.. Push and pull the driveshaft looking for any play at the cup areas.

May 18, 2010 | 1998 Nissan Pathfinder

1 Answer

HAVE 2004 JEEP GRAND CHEROKEE,HAS LOW WHINING NOISE FROM LEFT FRONT. CHECKED BRAKES AND ROTORS AND ALL IS OKAY. DRIVES NORMAL AND DOES NOT SEEM TO BE BEARINGS. sTARTS AT ABOUT 20 MPH AND STOPS AT 50 MPH.OR...


the whinning noise is definalty a signiture of the bearing, and they do on occasion start making the noise long before other systoms of a bad bearing appear. There is really nothing else in the suspension that moves in a manner to cause the whinning pitched sound, other than the axel, but there signature has allways been a clicking around turns, so id definatly look cloesr at the bearings......good luck

Mar 21, 2010 | Jeep Grand Cherokee Cars & Trucks

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