2006 Chevrolet Avalanche Logo
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roy l satterfield Posted on Feb 26, 2015
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Service stability system how

There is a grinding noise periodically when I hit bumps at low speeds it stops when the vehicle stops

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Randy Ohler

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  • Chevrolet Master 14,585 Answers
  • Posted on Feb 27, 2015
Randy Ohler
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Have the ABS system read for codes. Most likely a bad wheel bearing. But which one?

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  • Posted on Mar 08, 2016
William Moore
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My pulleys for water pump alternator keep having to replace

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When your Cadillac shakes when you start it what usually wrong

  • Knowing the warning signs of impending trouble can go a long way toward keeping your car from a highway breakdown.

    You need to develop an awareness of how your car should sound. For instance, when you turn the key to start, the gear like sound of the starter motor engaging should be smooth and sound like an electric motor working hard to crank the engine. If you notice a different sound - more like a grinding - chances are you have a starter motor problem about to happen. Let's say you're driving along and you feel the steering wheel vibrating at certain speeds. The onset of this subtle vibration could tip you off to a tire that needs to be balanced, worn steering linkage or a bulge in a tire that may be about to blow out. In any case, the vibration needs attention. Normally you shouldn't notice the sound of the exhaust system. A sudden change in your car's sound, therefore, isn't something to ignore.

    Suppose you're used to a pleasant hum, then, perhaps after a bump or when starting up the car one morning, there's a loud roaring that sound like a hot rod without a muffler. The harder you press the gas pedal. The louder the noise becomes. A noisy exhaust means the exhaust gases are blowing out under the car rather than at the rear of the car - a dangerous condition. Brakes play their own warning tune. On many cars, a scratching noise coming from the wheels that stops when you stop pressing on the brake pedal is caused by a low-brake warning device. Its purpose is to warn you that you need front brake pads. A loud grinding noise when you step on the brake pedal is an alarm that your brakes need immediate attention. The grinding noise occurs when the brake pads are totally worn away and the metal of the brake pad backing plate rubs directly on the brake rotor.

    Ignoring grinding brakes can be a costly - or even deadly - error. Shock absorbers help keep the car steady and balanced while the wheels roll over bumps and ruts. Their modern counterpart, the MacPherson strut, does essentially the same thing. You might not notice worn shocks or struts when you're simply riding around town. The safety effect of these devices comes into play at higher speeds. When you hit a bump, the tire wants to bounce like a basketball. Worn shocks or struts allow the ties to bounce out of control making steering difficult and braking less effective.

    What you may notice is the car rocking more every time you stop, assuming an almost boat like quality. Old, broken or worn out shocks and struts should be replaced to ensure safe steering and braking at higher speeds. Engine noises are easiest to hear when the car is not moving. Transmission sounds or brake noises usually occur when the car is moving. Pay attention to any new sound and keep notes - how it sounds, when it makes the sound and what difference, if any, occurs in driving when the noise is present - to help you describe it to your service dealer.
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Rotational grinding noise from front driver side (90' toyota pickup V6 automatic). grinds all the time when i get moving, sill stop for a second if i hit a bump, then start doing it again. ive alr

This sounds like the cover plate that's mounted on the side of the disk unit.It's normally fastened with two or three bolts and they do come loose at times. Could also be the actual disk pads that have worn down to metal, which will move away from the disk for a few seconds after hitting a bump.If so, make sure that your disks are not scoured as a result of metal on metal contact, whereby you would have to fit a new disk with the new pads.Check it out. Good luck.
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Stability control

Why are you using the car at all?

Immediately -- any time any vehicle is not
100% perfect,you stop & find out why

Have is diagnosed & repaired

Could be wheel hub bearings or other abs system issues.

Could be simply neglect to disassemble & work on your
brakes, at least once a year.
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Terrible bang/ thud when i hit any bump even small ones at any speed

could be a bad brake caliper, try riding brake and hit a bump did it quit? loose exhaust system, boken strut or shock, broken sway bar stabilizer bolts
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Grinding noise from behind the dash. The noise sounds like it is related to the tachometer. I have a 2004 Suburban with the Stabilitrak system where it is in All wheel drive all the time (no 2H only All...

No idea what the problem is either. I have a 04' LT that started doing it as well. Doesnt matter hot or cold, does it randomly. Usually when I come to a fast stop then resume speed its sounds like grinding in the dash and while hitting the gas I get NO acceleration, let off for a second then its good. Its happening more often now than before. Does anyone have any ideas?
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I have a 2007 Silverado Classic 2500HD 4x4 Extended Cab 6.0 V8 I have 33" AT tires and Rancho RS5000 shocks (both are 18 months old) I recently replaced the front wheel hub assemblies, and religiously...

noises are a pig to diagnose from afar but i would get a can of spray silicon and spray one component at a time to find the noise...do it when dry and when you dont hear it guess what?.....
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I have a 99 Discovery II and the Traction Control, Hill Descent Control and ABS lights have suddenly come on. What is the system fault or, in the alternative, how can they be reset?

Can't be reset if your ABS system or some component is faulty. check speed sensor on the wheel bearing, is there any rubbing or dull grinding noise coming from the front wheels? could be the entire bearing and speed sensor assembly has gone bad. this would cause all these faults to appear as that sensor triggers all these events in order to slow your vehicle while it downshifts itself and applies breaking to control the vehicle as a part of the stabilization system. The alternative is that the ABS system is not functioning properly and the trac control and hill decent systems are being deactivated as part of the fault. If the system cant apply breaking then the systems are rendered unavailable. the vehicle will stop but not using ABS just regular breaks. Check all ABS break fuses for damage.
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Brand new 2010 Honda odyssey Touring within 40

I can’t be much help on this one (too new for my experience), but your manual will say this (which probably isn’t all that helpful either).
The vehicle stability assist (VSA) system helps to stabilize the vehicle during cornering if the vehicle turns more or less than desired. It also assists you in maintaining traction while accelerating on loose or slippery road surfaces. It does this by regulating the engine’s output and by selectively applying the brakes.
When VSA activates, you may notice that the engine does not respond to the accelerator in the same way it does at other times. There may also be some noise from the VSA hydraulic system. You will also see the VSA activation indicator blink.
The VSA system cannot enhance the vehicle’s driving stability in all situations and does not control your vehicle’s entire braking system. It is still your responsibility to drive and corner at reasonable speeds and to leave a sufficient margin of safety.
On touring models you will also see a ‘‘CHECK VSA SYSTEM’’ message on the multiinformation display if there is a problem with the VSA system.
Without VSA, your vehicle still has normal braking and cornering ability, but it does not have VSA traction and stability enhancement.
The VSA system automatically turns on every time you start the engine, even if you turned it off the last time you drove the vehicle.
I’d get on the Honda people about the problem, especially since you just got the car. I would think that the alarming sounds you are hearing have to do with the unit working the brakes when it shouldn't be, but that's a guess.
Hope this helps some.
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2001 jeepgrand cherokee wobbles and shakes @low speed

could be a bd axle or ball joints wheel bearings are also a concideration
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1998 fORD ESCORT WITH A CLUNKING IN THE LF OVER BUMPS

Most definately some bushing. Just check all of them, make sure all the bolts are tight. Jack the car up and get underneath it and start wiggling the suspension. Grab the wheel and shake it. Try to find the corner or side of the vehicle that the sound comes from.
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