[Charlie455]

So I have everything I can find disconnected on my 97 Bonneville to remove my 4T60E trans. But it's still tight against the engine and I can't find any more bolts to take out. The chassis mounts are all free too. My manual states there is a bolt mounted from the engine into the trans that is on the firewall side, but I cant find it. Does anyone have a clue on this one?

[Jeff Walker]

There is one bolt that comes in from the engine side on the back (firewall side.) I is tucked up against the block near the bottom and is pretty hard to see. A swivel socket and a few long extensions really help to get to it too. HTH

[LPete]

It's been awhile, but I think it's above and a little forward of the axle shaft. A mirror will let you see it. It should be in line (straight across from) the same bolt on the front that comes in from the transaxle side.

[Charlie455]

Thanks!! Your input is greatly appreciated! I'll dig out a mirror and the extra extensions with swivel. Need to get this beast fixed!

[zbuickman]

IIRC it goes through the block and threads into the trans. the reverse of the rest

[fellro]

Yes, it is tucked in between the trans and the main block. It is the same basic pattern around the bell, but just coming in from the engine side. Also, there should be a support that mounts from the axle end of the trans to the block, two bolts on the end of the trans housing, you'll also want to take it loose from the block, another two bolts, makes life a lot easier.

[Charlie455]

Well it's finally out. Thanks again and I did have to take out that end bracket to get to this bolt. In fact, I ended up having to unbolt the rack and entire front lower frame assembly. Today I'll tear the trans open and see how much damage I have.

[Charlie455]

Well the assessment is in. I ended up buying a replacement Driven Sprocket, 2nd, 3rd, and Input clutch assemblies from a low mileage donor trans. It's almost back together and I'm expecting to put it back in tomorrow night. I heard that when so much damage occurs in a trans like this, that’s it best to replace the oil cooler. My question is: Is that the separate radiator that sits in front of my coolant radiator? I planned on flushing this out anyway but I'd hate to damage all the work and expense by not addressing this now than later if replacing it is the way to go.

Thanks in advance...

[Jeff Walker]

Follow your cooler lines from the transaxle and you will see where they go. Most vehicles run them through the radiator. I would definitely recommend replacing the cooler if there was a lot of metal and material in the pan when you pulled it apart. HTH

[Charlie455]

Thanks Jeff. It is probably the best insurance I can buy at this point. So is that the "Radiator" or the tank section?

Chas.

[Jeff Walker]

I think you might find it just as cheap or cheaperto replace the entire radiator compared to having the cooler replaced in you original radiator.