Question about 2004 Chevrolet TrailBlazer

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I am losing transmission fluid but can't find a leak????? where can it be going

2004 Chevy Trailblazer 113000 miles. Losing approximately 1.5 quarts of transmission fluid a month. I have searched and searched for leaks. There are no spots under my vehicle after is has been parked for several hours. Where could the fulid be going.

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I take it that it is an automatic transmission, if it is draining that much fluid a month and you can't find any outside leaks it could mean there is an internal leak somewhere. If you see a pink milkshake color in your coolant then it could be the radiator transmission cooler which I believe wont cause an outside leak so you can start from there. It is located and is part of the radiator. Just follow the transmission cooler line and it will lead you the possible problem.

Posted on Feb 25, 2012

Testimonial: "Thanks.. If I do find it in the coolant.. is this an expensive fix and is it something that I can do myself or does it have to go to a mechanic or dealership?"

  • silver Feb 25, 2012

    Depends, are you up to it? If you do find the color I described in your coolant then you might have to buy a new radiator that is if there is some type of internal leakage in the transmissin cooler. You have to flush out you transmission and your whole system of the coolant. The diagnoses I gave you above could be one of the reason but a transmission leak is usually hard to detect externally anyways. If you have some more info just tell me. Also this type of job I would suggest taking it to a mechanic. The best I can do for you without being able to see the vehicle.

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Posted on Jan 02, 2017

66 chrgr
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SOURCE: 2004 chev trailblazer #6 piston losing compression - replace?

Get a second opinion from a independent shop that sounds way to high.

Posted on Jun 18, 2009

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