Question about 2000 GMC New Sierra 1500

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Belt squeal 2000 gmc

The belt squeals on my 2000 gmc when the heater is turned on , i have replaced the belt and the tensioner seems to be fine

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  • Anonymous Sep 26, 2008

    every time i start it up the engine the belt squeels loudd

  • Sammyt42 Nov 30, 2008

    I have a high pitched sound coming from front of truck. Only happens when I'm moving. Not idle, or revving rpm's idle. The Sound comes and goes. I changed serpentine belt. I don't think it's a pulley bearing. (only makes sound when I move). I am thinking it is a wheel bearing. If it was the water pump, what kind of sound could it make ? Need help

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Replaced the air conditoiner belt and serviced the tensioner for this belt

Posted on Jun 26, 2008

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2 Answers

Why no heat in 2001 mazda protege


Possible that the fan belt is not tensioned right or that the water pump is binding causing low flow through the heater.
If belt is not loose, release it more and try turning the water pump by hand to see if it is binding.

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My belt squeals when I turn my ac or heater on


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Can't find the source of the squeal


Year make and model ??
The belt could be glazed and slipping even if it is tight.
You could have a weak belt tensioner too.
The noise when the ac or heat is turned on can be the extra load from the ac compressor or the alternator. The compressor cycles on and off especially in defrost mode.
The load from the alternator is the first noise of the day. As the belt warms up it becomes better at handling the load of the accessories.
Even tho the belt looks fine, you may have to replace it to get rid of the noise.

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The belt in my 01 Dodge Dakota squeals badly. Started when I had my power steering pump replaced. I tried changing the belt and the tensioner, but still squeals. Is it possible the pulley on the power...


excess mechanical drag from the pump can cause the belt to slip and squeal, but before focusing on the pump I'd check the condition, tension and alignment of the belt. I might even try cleaning all the pulleys with an aerosol brake cleaner and install a new belt, particularly if the current one has more than 50,000 miles on it. It might be that the squeal is coming from or caused by a different belt-driven accessory.
A more typical noise from a power-steering pump is a high-pitched whine, not a squeal. Usually, if the steering wheel is stationary, meaning that the steering rack is not "asking" for assistance from the high-pressure fluid from the pump, there's little or no noise

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I have a 2001 Subaru Forester. When I turn the A/C on, the cars squeal loudly at idle and at slower speeds. At higher speeds 40 MPH, the squeal stops. The A/C works fine. Additionally, when the temp...


You have a loose belt on the A/C. On most new cars that is one big belt that drives everything on the car. If when you look at the belt on the grooved side, do you see cracks on the grooved part running across (from side to side) on the belt? if so, it is in bad need of a new belt. A new belt should stop the squealing noise. While you are replacing the belt also check the belt tensioner to ensure it is in good working order.

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