Question about 2007 Hummer H3X

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When I press the gas pedal there is a loud whining noise coming from near the transmission on a 2007 H3

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: I have a 2007 H3 hummer, suddenly my fan does

It's the HVAC blower resistor in the air plenum under the glovebox. New resistor and wiring harness is about $70 at the Hummer Dealer.

Posted on Oct 07, 2009

awaissabair
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SOURCE: i own a 2007 Hummer H3 and there is a noticeable thud noise and slight jolt when pressing accelerator after coasting and when accelerating from a complete stop.

this sound like either the fans or fan is not coming on or not performing like it should, or coolant system is clogged or low on coolant. if you have electric fans turn the a/c on are they both on ? if you have a clutch fan attached to the motor when the a/c on and engine at operating temp put your hand over engine is the fan realy pushing air out? if not its bad . you can check the temp of each side of the radiator to see if the is a difference this will tell you if their is a clogg. so check fans and check coolant system for a leak , for proper circulation , when was the last time you had the coolant system flushed ? and gm uses a different coolant then other makes if someone put regular green in with the dexcool it will become corrosive and can eat blades on water pump not allowing it to function like it should pumping coolant andit will clogg the system.

Posted on Oct 05, 2012

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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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Hello
altho new you may have a whining water pump or tensioner or it may be over tensioned.

take a long screw driver & place in on the timing cover to try to here where the noise is coming from, this should help you find the proplem with the car
Regards Paul
www.limotec.co.uk

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Does this appear to happen when the fan is going? Try having your fan belt checked.

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