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Fluid leak between engine and tranny

Fluid leak between engine and tranny

Postby kcwolf200 [OP] » Dec 21 2012, 8:01pm

So, I bought my truck in Aug and not long after I got it home, I noticed what I thought was oil between the engine and transmission bell housing. It was mainly on the housing and looked like it had blown back across the transmission pan. I was told it was the oil pan gasket, and it was replaced under the powertrain warranty.

I looked under there last weekend and I see the same thing. Fluid still looks kinda like oil. Took it back (vehicle powertrain warranty ran out 2 weeks ago) and they told me it is the transmission cooler line that needs replaced and it will cost $190.

What are your thoughts on this? Fluid is in the same place, but I'm told that it's two different problems. I just want it fixed and don't want to keep replacing parts. I will try and post some pictures this weekend. Where can I find this line to verify that it is leaking? Thanks in advance for your replies.

BTW, truck has 64,000 miles and is an '07 Silverado with the 5.3L.
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Related Topics  Power Steering Fluid Leak   4.8l engine to 5.3l tranny   engine ping, oil leak   looking for the leak   Oil Leak   Oil Leak 5.3   Oil Leak   Fuel Leak Help   Coolant leak   oil leak   engine over heats after engine flush   mystery coolant leak   Minor Oil leak   Overfilled with oil and now have a leak! 
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Fluid leak between engine and tranny

Postby Machster69 » Dec 21 2012, 10:05pm

Can you take a pic?
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Re: Fluid leak between engine and tranny

Postby masterem88 » Dec 22 2012, 12:13am

With leaks, you always start high and up front and work your way down and back. Saves alot of troubles
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Re: Fluid leak between engine and tranny

Postby kcwolf200 [OP] » Dec 23 2012, 12:39am

So, I picked up the truck from the shop this morning. They had to order the part. They said it was leaking onto the skid plate. I will take some pictures tomorrow and post them. It looks like the line is leaking, but unsure if that's all it is. I wonder why they didn't noticed that a few months ago when they were tracking down the leak.
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Re: Fluid leak between engine and tranny

Postby ASTE25 » Dec 23 2012, 2:39am

Rear main seals are a pretty common source of leaks on these engines.
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Re: Fluid leak between engine and tranny

Postby kcwolf200 [OP] » Dec 23 2012, 9:17pm

Here are some pictures that I took. First of all, it's clear that the line needs replaced.

P1010746.JPG


P1010745.JPG


Here is the area that I originally noticed fluid. Keep in mind, it appears the dealership wiped most of it away.

P1010751.JPG


P1010750.JPG


Also, the sway bar has most of the fluid on the rear portion and hardly any on the front.
Back
P1010752.JPG


Front
P1010754.JPG


Here are a few other pictures. Note that the front skid plate has fluid, but the plate behind it does not show any.
P1010749.JPG


Here is the view looking back from the skid plate
P1010748.JPG


Lastly looking up on left side
P1010755.JPG


And on the right
P1010756.JPG
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Re: Fluid leak between engine and tranny

Postby starspangled6.0 » Dec 23 2012, 9:22pm

I would replace that leaking line, and then see what happens after that.
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Re: Fluid leak between engine and tranny

Postby EKinMN » Dec 23 2012, 11:24pm

There is definitely a lot going on under there. I had a similar leak and was told it was a pan gasket, just like you. Had mine fixed, and so far, so good. Here is what mine looked like:
Image
I thought for sure it was a rear main seal. Lucky me, I guess!
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Re: Fluid leak between engine and tranny

Postby GM Customer Service » Dec 24 2012, 3:30pm

kcwolf200 wrote:So, I bought my truck in Aug and not long after I got it home, I noticed what I thought was oil between the engine and transmission bell housing. It was mainly on the housing and looked like it had blown back across the transmission pan. I was told it was the oil pan gasket, and it was replaced under the powertrain warranty.

I looked under there last weekend and I see the same thing. Fluid still looks kinda like oil. Took it back (vehicle powertrain warranty ran out 2 weeks ago) and they told me it is the transmission cooler line that needs replaced and it will cost $190.

What are your thoughts on this? Fluid is in the same place, but I'm told that it's two different problems. I just want it fixed and don't want to keep replacing parts. I will try and post some pictures this weekend. Where can I find this line to verify that it is leaking? Thanks in advance for your replies.

BTW, truck has 64,000 miles and is an '07 Silverado with the 5.3L.


Sorry to hear about the leaking issue occurring with your Silverado. If you would like us to look into this issue, please send a PM with your name, situation, vehicle VIN#, dealership name, and contact information. Thank you and I hope you have an enjoyable holiday despite any truck concerns.

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Re: Fluid leak between engine and tranny

Postby kcwolf200 [OP] » Dec 24 2012, 9:41pm

I appreciate all the help. The leak seems to be pretty slow, so I'll just have the line replaced and then watch it. As mentioned, the cooler line needs replaced for sure, so at least I'm not wasting money on a needless repair. Thanks for all the replies.
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