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Transmission Whine

Transmission Whine

Postby jpc2010 [OP] » Nov 01 2011, 1:36pm

I have a 2010 Silverado 4x4 4.8l. 33,000mi on it. I just got it a month ago. It has a transmission whine when accelerating. Does not happen in park or neutral. Before i bring it in just wanted to see if anyone else has had this problem. I am a mechanic by trade and hate bringing my vehicles to the dealer since i have worked at dealers before, but this is the only vehicle that i have had in a while that actually has some warranty left. thanks for the help
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Related Topics  fuel pump whine   2012 4x4 whine   Power steering whine   Rear end howl/whine   small whine sound when letting off the brake   High pitch whine after pump rub   Do I need a new transmission?   Transmission   Transmission   What transmission do I have   Which Transmission do i have?   Which transmission do I have?   New transmission   4.3 transmission 
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Re: Transmission Whine

Postby ASTE25 » Nov 01 2011, 8:24pm

Does it have any slipage? I'm thinking cavitation, possibly the filer is not sealing into the pump good and it is getting air in the pump inlet. Did you just have the filter and fluid changed? Just a guess. If it's not that, then who knows.
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Re: Transmission Whine

Postby jpc2010 [OP] » Nov 01 2011, 8:55pm

No nothing has been done. Sounds like a pump whine or a bearing. I've seen Toyota trucks with a similar noise ant it was the pump. Thanks for the input
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Re: Transmission Whine

Postby Gorecki » Nov 01 2011, 9:21pm

Can you run through Park, Reverse, Neutral, Drive and back while stepping on the brake and hear the whine come, go and come back?
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Re: Transmission Whine

Postby jpc2010 [OP] » Nov 02 2011, 1:58am

Does not ever happen in park or neutral. When it is in any gear if I push the accelerator it gets louder with higher rpm's weather sitting still with my foot on the brake or while driving.
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Re: Transmission Whine

Postby Gorecki » Nov 02 2011, 2:55am

jpc2010 wrote:Does not ever happen in park or neutral. When it is in any gear if I push the accelerator it gets louder with higher rpm's weather sitting still with my foot on the brake or while driving.


Not what I was thinking then. Torque converter comes to mind but I honestly can't be sure.
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Re: Transmission Whine

Postby ASTE25 » Nov 02 2011, 4:41am

It's kinda hard to diagnose it over the internet. Let us know what it is when you find out.
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