TH400 Whining... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Figuarus · 02-24-2016, 06:04 PM

So, I just serviced the filter and fluid on the Th400 I have in my 64, and it has started whining when it's cold out.

After it warms up, or I drive it for about a mile or two, the whining goes away.

The filter and fluid are both brand new, and when I changed the fluid, there wasn't any real sediment in the pan.

I'm thinking front pump, but Im not too educated in this transmission to make any kind of diagnostic.

I do have a cooler on it, and the hoses are new(er) too.

Any help?

02-24-2016, 06:04 PM	#1
Figuarus Registered User Join Date: Sep 2014 Location: Salt Lake City, UT Posts: 346	TH400 Whining... So, I just serviced the filter and fluid on the Th400 I have in my 64, and it has started whining when it's cold out. After it warms up, or I drive it for about a mile or two, the whining goes away. The filter and fluid are both brand new, and when I changed the fluid, there wasn't any real sediment in the pan. I'm thinking front pump, but Im not too educated in this transmission to make any kind of diagnostic. I do have a cooler on it, and the hoses are new(er) too. Any help? __________________ 2013 Malibu LTZ 1996 C1500 4.3/5spd 2wd



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