Rear main seal leaking

[Tukkr]

I need to replace my rear main seal because its starting to leak (nowadays I find a small puddle each morning).

I have looked on rockauto.com and found the following part no. GM GENUINE 12639250

Is this the correct part? (could not find it under my vehicle in rockauto) and should I replace other stuff while my mechanic is at it? Just making sure because I have to order everything from the States.

Thanks!

Shopping list based upon comments (via rockauto):

1x GM GENUINE - crankshaft main bearing - part no. 12639250 ($58,00)
1x FEL-PRO - oil pan gasket - part no. OS30693R ($38,00)
1x MELLING - oil pump pickup tube - part no. 324S ($85,00)
1x GM GENUINE - transmission mount - part no. 15113134 ($47,00)
1x GM GENUINE - torque converter shaft seal - part no. 24202535 ($5,00)
1x FEL-PRO - oil cooler gasket - part no. 72462 ($5,00)
1x FEL-PRO - oil pump pickup tube o-ring - part no. 72401 ($2,00)
1x MAHLE - oil pump pickup tube gasket - part no. B32790 ($2,00)
1x MELLING - oil pump pickup tube bracket - part no. ($19,00)

Don't know however if I have the quantities correct! please let me know

kr,
Nick

 

[91RS]

I do believe that is correct. You definitely want the whole housing that comes with the new gasket and rear main seal itself. I would go ahead and do an oil pan gasket at the same time by the looks of it.

 

[mattbta]

Need mine done, too. I have one of these in the glovebox waiting to go in. Figured while the trans is out, might as well.

LS Billet BarBell/ Oil Diverter

The Oil Gallery Barbell in your LS GM Gen III & IV based engine is something that is over looked. Stops unfiltered oil and improves oil flow.

www.saccitycorvette.com

 

[Joseph Garcia]

I need to replace my rear main seal because its starting to leak (nowadays I find a small puddle each morning).

I have looked on rockauto.com and found the following part no. GM GENUINE 12639250

Is this the correct part? (could not find it under my vehicle in rockauto) and should I replace other stuff while my mechanic is at it? Just making sure because I have to order everything from the States.

Thanks!

kr,
NickView attachment 351027

If you want to be sure, post the last 8 digits of your VIN, and @915_Tahoe will provide you with the correct part number. As @91RS stated, "You definitely want the whole housing that comes with the new gasket and rear main seal itself".

 

[smcnair]

second on the oil pan gasket but add in the pickup tube o-ring...that thing is a *****.

 

[Mudsport96]

Third on doing the oring while there, and i would do the block off plate/ oil cooler adapter gasket as well. The father in law paid to have his rear main done to stop a leak, still had the mess in the driveway.
Ended up being to the block off plate. Five dollar gasket you can do in a driveway in 5 minutes cost him 300 at the shop to fix a problem he didn't have.

 

[OR VietVet]

Oil and filter of course, pickup tube o-ring, oil pan gasket and make sure to clean out or replace the oil pickup tube while apart. Complete rear main seal assembly and I did the torque converter seal when apart. Definitely the oil cooler lines plate/block off. If is easy to get to while apart, do the oil sender switch. Check the transmission mount and replace as needed.

 

[Tukkr]

Thanks for all your replies, very much appreciated. The last 8 digits of my VIN are: 2J271332.

 

[Tukkr]

Just updated my opening post with the stuff based upon your comments!

 

[915_Tahoe]

Cr/Shf RR oils seal Housing with gasket and seal
Gm#12639250 $83.93

Rear main seal
Gm#89060436 $30.65

Rear housing gasket
Gm#12639249 $30.62

Oil pan gasket
Gm#12612350 $49.73

Pickup tube seal
Gm#12584922 $9.47

Side cover gasket without engine cooler
Gm12611384 $4.79

 

[Tukkr]

Cr/Shf RR oils seal Housing with gasket and seal
Gm#12639250 $83.93

Rear main seal
Gm#89060436 $30.65

Rear housing gasket
Gm#12639249 $30.62

Oil pan gasket
Gm#12612350 $49.73

Pickup tube seal
Gm#12584922 $9.47

Side cover gasket without engine cooler
Gm12611384 $4.79

Thanks!!

 

[OR VietVet]

Something I forgot is the seals where the driveshafts slip in. Those are coming out and would be perfect time to install 2 new seals at the front and rear.

 

[Rocket Man]

Are you even sure your rear main is leaking and not a combination of all the other normal leak spots like the valve covers, oil pressure sender, block off plate, pan gasket etc? You can get a boroscope up there to see, that’s about the only way to be positive.

 

[blueinkd]

Get rear Trans seal with boot, where driveshaft slips in
-Exhaust flange gaskets, for both sides and I think the rear may one one too. For when mid pipe comes down
-I would replace the oil switch up top and the cam pos sensor as during my research I saw where these two were proven to leak over time.
-Nows a good time to do a trans filter as well since trans will be out and on the floor. Dropping the pan otherwise is a painful process

 

[blueinkd]

.

 

[BLZNHOT]

I seen in other posts if you just change the seal you should use a line up tool, if a new plate come with seal in it you cant use the tool... any body run into any problems just putting it in like it is, my tranny guy they said they had a recall because of porosity in the aluminum and could leak?