2007 Silverado 5.3 - Chasing an Oil Leak Part 3 of 3, Had a Professional Change the Rear Main Seal

In this video I have the Rear Engine Cover with Rear Main Seal installed by professional. Sorry that I didn’t do the work, but I don’t have all the tools.
Part Number: 12639250

[@DustinKeating-yk3vq]

900 is a great deal i was thinking close to 2000 also but you found a great mechanic

[@x-coastie]

Yep. Hole in the wall shop, but great mechanics.

[@kodak_jack]

This was relatively easy because on most vehicles, the engine sits in a cradle and it involves messing with the struts and everything else you can think of = $$$$$$$$$$$$$$$$$$$$$$$$$$$$$

[@x-coastie]

Yep. Plus mine is a two wheel drive. Didn’t have to drop the transfer case and front axles.

[@jackiemenard866]

Thank you for the videos 👍🏼 I'm having the same problems with my Sierra

[@x-coastie]

Glad it helped.

[@98DemonZ28]

The most successful way to reseal the rear cover is to put ac/delco rtv on the corners, put it on loosely and tighten and torque the two long bolts first to create a better seal against the oil pan gasket then torque your rear cover fasteners to 18 ft lbs of torque. If you dont have an inch pound torque wrench then mechanic tight is fine on the two lower bolts. Ive replaced these on everything from 4th gen camaros to c6 grand sport vettes.

[@x-coastie]

Good to know.

[@DustinKeating-yk3vq]

300,000 miles that great did you ever have any problems with the afm or did you delete it i ask this because i have the 07 also that had all the afm lifters and cam taken out and put regular lifters and cam in it so it doesn't have afm no more

[@x-coastie]

I’ve never had an issue with the AFM. It’s still going strong. I hear people mention that a lot, but i don’t know what the deal is and why you would want to defeat it.

[@GGAutoRepairSearcy]

I hope it is fixed because what usually starts the leaks happening is high mileage and engine wear. You have enough mileage that your rings are letting a bit of compression into the crankcase. It is called blow-by and it creates pressure in the crankcase. You did get a good price and you did at least slow the leak.I wouldn't have tackled it in my shop because an oil leak on a high mileage engine is not a warranty worthy repair. It will leak somewhere until the engine wear is addressed. You sound like a very reasonable customer though.

[@x-coastie]

When he replaced the seal he said he found no movement in the crank. He said it felt solid. So hopefully I’ve got a good engine that may last another hundred grand.

[@davidmitchell7624]

Really great explanation. Thanks for sharing. Also, are you in the Carolina's (saw the plate and Tarheels front plate)....I would be interested in understanding which shop you used if you're open to sharing.

[@x-coastie]

I used my friend’s shop brother-in-law’s shop. Mcclure’s Auto Service, 1518 N. Chester St, Gastonia NC. It’s not a pretty shop, so dont judge the shop, judge the work. Hope this helps.

[@davidmitchell7624]

Thanks for the referral to the shop.

[@chrisgreene9755]

Where did the oil come from in the last check? Looks like it was wiped away..

[@x-coastie]

It was the rear main seal. It was very slightly seeping past the gasket. I zoomed in to try and show it.

[@jaxjax5322]

I have the same problem every time i go inside and look on my truck chevy silverado 2012 and already change oil pan gasket and oil gasket hoses that goes too radiator and still continue leaking 🤯

[@x-coastie]

If you have the rear main seal done, make sure they do a hand check on the crank to see if there’s any play on it. They said mine showed no signs of play and the new seal should work for several more years. They said if they detected play on the crank, that it was soon going to need another one and that it would be better to rebuild the engine or replace it.

[@lonniehamilton914]

Great job for no video 💯

[@x-coastie]

Thanks! 😃