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Rear Main Seal Gmt-900

Stevens03

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Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Well, I've had dang near Zero issues with my truck since new, but around 27,000 miles the rear main seal needed replaced. While in there, the transmission seal was showing signs of leaking, so the dealership changed both. Now, I'm at 47,000 miles and just had the truck inspected and the rear main seal is leaking again. :thumbs:

 

Taking it to the dealership tomorrow to see for sure. I believe it should be covered under the power train but seriously, come on! I don't beat on my truck at all, quite frankly I drive it pretty easy 99% of the time. It shouldn't be out again :uhoh:

Matt_ Senior Enthusiast

Matt_

Posted
Posted

I heard they fixed the seal issue in the 2009 model years.

 

Guess its time to trade that thing in for a 2010.

 

You're welcome :thumbs:

gnet158 Senior Enthusiast

gnet158

Posted
Posted

Great! Let us know if it's covered under the powertrain warranty. No issues on mine yet at 28K (keeping fingers crossed). Is this a common problem?

Stevens03 Senior Enthusiast

Stevens03

Posted
  • Author
Posted

Well, I suppose it's common, but I've not read much of it :thumbs:

 

Twice now for me :uhoh:

Matt_ Senior Enthusiast

Matt_

Posted
Posted

dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

Stevens03 Senior Enthusiast

Stevens03

Posted
  • Author
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

Willshire Enthusiast

Willshire

Posted
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

 

 

 

Maybe there is a nick in the sealing surface of the crank and it is ruining the seal. Have them inspect the crank for wear marks or nicks. Must have got a friday truck :thumbs: .

gnet158 Senior Enthusiast

gnet158

Posted
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

 

 

 

Is it covered under the drive train warranty?

pm26 Senior Enthusiast

pm26

Posted
Posted

The rear main seal started leaking in my '95 Nissan V6 pickup ater 9 years/90k miles. The oil ruined my clutch, it cost me $ 1,200 for the new seal and clutch. And it wasn't really the rear main seal that was leaking. The seal is mounted in a metal plate, which in turn is bolted to the engine block with a paper gasket under it. They did not use any sealant under the paper gasket at the factory when the truck was made. So a $ 5 gasket cost me $ 1,200. The truck was out of warranty when this happened. :thumbs:

pm26 Senior Enthusiast

pm26

Posted
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

 

 

Being cheap is going to cost GM a lot of $$ in warranty repair bills. Seems to me that some beancounter came up with some cheap seal that saves GM $0.50/truck over a good one.

Wires Enthusiast

Wires

Posted
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

 

 

 

Could have been the installation. My dad had that issue. Guy was too lazy to grab the seal driver so he just used a punch. That puts a big dint in the seal, and it fails prematurely.....

Stevens03 Senior Enthusiast

Stevens03

Posted
  • Author
Posted
dont forget to have them remove the heated washer fluid system while you're in there getting the seal fixed.

 

 

.....sorry, i guess that didnt make you feel better.....

 

Good idea on the heated washer.

 

Just the more I've thought about it, the more it makes me mad. The trucks only got close to 47,000 miles on it and this is the second time the seals gone out. Just frustrating I guess. Thank god for the drive train warranty.

 

 

 

Is it covered under the drive train warranty?

 

 

Yes, its covered. It's at the dealership now with the transmission out of it. Should be done by the end of the day tomorrow. They are also fixing the recall on the heated washer fluid and the one with the carpet flap under the seat.

 

Edit: Well I went to check on my baby, and it looks like my exhaust/cats are out and the transmissions out. Lots of parts on the floor. I just had to make sure it was inside. :thumbs:

Stevens03 Senior Enthusiast

Stevens03

Posted
  • Author
Posted

Ok, got the truck back with a laundry list of seals replaced.

 

I guess when they got into it,.. they replaced the rear main, a seal that covers the main, oil pan gasket, knock sensor gasket and the two oil cooler leads as well were leaking. All covered by the warranty and 2 of them were done out of courtesy.

 

Overall, glad I took it in.. but Why so many different oil leaks!?!?! I don't beat on my truck and I certainly maintain it well.

 

Anyways... alls good and moving on.

Steven

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