BRL's Chevy Towing Inc.

[BRL]

My friend stopped by tonight and told me that his ('78?) Chevy 4X4 is broke down sitting on the side of the road.

Said he went up a small hill on his way to work this morning and he felt the transmission slip a little, then shortly thereafter the trans. quit pulling altogether.

Locked in the front hubs which didn't help.

Knowing how good my friend (we'll call him Mr. Maintenance) is at keeping up on fluid levels, I assumed the trans. fluid was low without first checking the stick and added about 1 1/4 quarts of fluid.

Now the fluid is about 1 1/4 quarts too full and still no response.

After I towed him home in my cool '69 C10 Stepside, I crawled underneath and saw that the drive shafts and U-joints are still intact, so I'm assuming that the transmission (possibly the transfer case?) is the problem.

Of course the pan doesn't have a drain plug, so I get to remove some pan bolts to drain off some excess fluid too.

He said it never slipped before today and I know he does drive it like a little old lady.

What should I be checking next?