Transmission service question/ pan
 

I've got a 95 GMC with 350/automatic and the transmission fluid has never been changed. ODO shows 48K so I figure it's due. I know I have to drop the pan, and I figured WHILE the pan is dropped, why not add a drain plug where next time I can just do a couple of simple drain and fills to get some new fluid in there.

So, are all 4l60E pans the same? I notice some say "late model" and there are apparently some OEM deep pans with drain plugs. I was wondering if one of these would fit my truck?

http://www.ebay.com/itm/4L60E-GM-Tra...#ht_631wt_1170

Re: Transmission service question/ pan
 

To run the late Deep 4L60E pan.....All you need is the corresponding filter, Order one for a 01 C1500 5.3L.

The drain plug on those pans are useless 90% of the time.....The bolt head will round off useing hand tools. I use a 1/2 drive impact with a New 15mm chrome Snap-on socket (The only thing I use that socket on, To keep it from wearing).

Re: Transmission service question/ pan
 

So it's that hard to get the drain plug out?

Almost all of my vehicles have always been standards, so the only automatic I've had up to this point is a 3rd Gen 4runner. I would do a simple drain and fill on it at 1/2 the
recommended interval since you only get out about 1/4 of the fluid on a drain and fill.

Does anyone make a decent aftermarket pan that has a normal drain hole?

Re: Transmission service question/ pan
 

Just go to your local parts house and pick up a drain plug for your existing pan.
I did this with my '02 Blazer with the 4L60. It took about 5 minutes to install.

Re: Transmission service question/ pan
 

I would think adding an aftermarket plug would result in leaks over time. How does this plug go into the oil pan? Short of dropping my pan, drilling a hole, and welding in a threaded bung I can't see the plug not leaking.

Re: Transmission service question/ pan
 

I put a drain plug in a 700R4 transmission in my Camaro 12 years ago. It came with a shift kit I had put in it. I have never had a leak since doing it. You do have to drop the pan, drill it, clean it real good. But once it is done, servicing the transmission is a breeze! Mine was a double threaded plug. In other words, the inside piece slipped through the drilled hole and screwed into the outside piece. The inner is hollow, call it the bung, so a bolt screwed into that, which is the drain plug. No welding at all, and never a leak. If it is done right they shouldn't leak.

Re: Transmission service question/ pan
 

Sounds like exactly what I want. I'll nose around and see what I can find.
Thanks for the help.

Re: Transmission service question/ pan
 

Jegs 60175 or B&M 80250?

Re: Transmission service question/ pan
 

Bump

Re: Transmission service question/ pan
 

The Jegs one, Stay away from B&M & nylon crush seals.
The Jegs ones looks to use an aluminum crush seal.

Re: Transmission service question/ pan
 

Makes sense. Thanks for the reply!