Question about 2006 Chevrolet Trailblazer

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I have a loud whining noise that sounds like the power steering pump, but it is not. Can you please help. Everytime I start up my 2006 trailblazer the noise is present. And evven when I excellerate, it gets louder.

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I had the same issue. It was a pulley that had to be replaced located near or below the belt.

Posted on Nov 17, 2010

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It could be the belt tenitioner or alterntor bairings mabey even the water pump Try removeing the belt to see what isin;t spining freely I;d have to say the tenitioner is most likely if your sure its not the power steering pump

Posted on Nov 14, 2010

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Remove drive belt and spin the alternator and idler pulleys by hand you should be able to fell the ruff bearing.....HAVE FUN

Posted on Nov 14, 2010

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2 Answers

Loud whine coming from engine


The whining sound that you here could be coming from a number of places. It may be a coincidence but I think you may be talking about the transmission's pump. You may want to buy a stethoscope. This tool, if properly and carefully used, will help pin point a mechanical noise. Other possibilities are the power steering pump, tensioner and idler bearing, A/C compressor or A/C clutch, or Alternator. I hope this helps, write back if you have any other questions, good luck.

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Whinning noise when engine is off


Whinning Causes
The whining noise you hear coming from the power steering pump is one of three things. The first is more of a loud "hush" than a whine; this is the sound of fluid rushing through the bypass valve when you turn the wheel all the way to one side or the other. Sometimes the bypass valve malfunctions or doesn't open all the way, causing pressure to back up in the pump and cause your engine rpm to drop. The second and third causes result from cavitation -- vacuum pockets created behind the rotor's vane blades as a result of extremely high pump action -- or air in the lines.

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check power steering pump fluid, with engine off try to wiggle every pulley if any move at all that's your culprit, power steering, alternator, idler puller, water pump, but sounds like bearing failure

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Powers steering pump makes a whinning noise .. fluid level is still good and dont notice steering problems... is pump going bad on 2006 impala?


Is it cold where you are? Whining sound is indication that it is starting to fail. Cold weather can make it whine also.

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When i start my car i get a loud whining sound from the engine


Try turning the steering wheel when you hear this noise, If it changes the pitch of the whine its likely either low on power steering fluid or pump is failing

Jun 10, 2010 | Cars & Trucks

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Whining when i press gas


normally, the only part of your automatic transmission that will make a whining noise is the pump. it usually whines when iether the fluid is low or more commonly when the transmission oil filter is getting plugged up.

the power steering pump will also make a whining noise too.

turn the wheel all the way to the right and hold steady pressure against the stop. this puts maximum force on the power steering pump and, if the power steering pump is the one making the whine, it will change the sound of it. (usually louder).

if the trans pump is making the whine noise, it should sound different in neutral compared to drive. this test will really only work if it make the noise without the vehicle moving. if it wont do it at idle hold the rpms at 2000 or so.

if you decide the noise is coming from the transmission, and the transmission filter has not been replaced (assuming you installed a used transmission), replace the filter by removing the oil pan.



oh and also, if it is the power steering pump you should be able to make it make the whining noise while the vehicle is stationary. if it wont make noise unless its moving its not the power steering pump.

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My 1999 Buick Lesabre makes a whining and sometimes thumping noise when I make turns at low speeds. What could it be? It became worse after a slow turn from a driveway. At that time it made a very loud...


Sounds like a combination of a power steering pump (whine) AND the CV axle (loud clunk noise). Check the fluid level in the power steering pump. The pump is located on the passenger's side towards the firewall. Kind of hard to get at but unscrew the cover and there is a small/short dipstick there. See what it reads. Add Power Steering fluid (NOT transmission fluid, as needed. Don't overfill)
I'd get the "thumping noise" taken care of IMMEDIATELY. Could be a serious problem. Qualified front end shop should be able to diagnose and give you an estimate of cost. Last time I had one done it was about $300 parts and labor...

Dec 02, 2009 | 2006 Buick LaCrosse

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The power steering pump that is used in your car is notorious for noise issues, it is a loud whine which gets louder as you turn the steering wheel right or left, flush the system fluid and replace the pump.

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The power steering pump humms when it has gone bad.

You need to replace or service it incase there is a blockage due to dirt in the transmission oil compartment.

Costs not so much.

Rate this please.

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4 Answers

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It is the bearing in the idler pully. about $35 and 30 minutes of work and its fixed.

May 20, 2009 | 2006 Chevrolet Trailblazer

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