2500hd Slip Yoke Issue

[gibbons948]

ive heard a lot about the issues with the slip yoke. definitly feeling the issue in mine. anyone know which one causes the problem...the front or rear drive shaft. expensive??

[dewfpo]

ive heard a lot about the issues with the slip yoke. definitly feeling the issue in mine. anyone know which one causes the problem...the front or rear drive shaft. expensive??

 

The slip yoke on the rear drive shaft. It should have a special grease put in periodically. It's a GM grease with Teflon I think, I've got some down in the shop.

 

DEWFPO

[gibbons948]

so you dont have to replace it? just lube occasionally?

[dewfpo]

so you dont have to replace it? just lube occasionally?

 

That's correct. Replacing it doesn't solve the problem. BTDT. Only regular lubing helps it go away for a while. The Teflon grease lasts a little longer between lubes.

 

DEWFPO

[BC2500HD]

I just got back from the dealer yesterday. I had the shop foreman take mine for a test drive and he said his does the same thing. He said they upgrade the slip yoke to a high nickel piece and that is all you can do. He said it has something to do with a binding in the slip yoke at the transfer case or trans (2wd). He admitted that is a design fault that can't be fixed. If you a 2wd you can lube the yoke, but if you have a 4wd you shouldn't use the lube. He said the lube will clog a pick-up screen and cause the transfer case to "burn out". I guess the ATF isn't compatible with the lube. So if you have a 4wd you're SOL to fix this. I glad GM uses the public for their R&D. What a joke. A new truck that is a clunker. Why not put a suitable drive shaft in from the get go. Maybe something with a slip joint built in.

[dewfpo]

I just got back from the dealer yesterday. I had the shop foreman take mine for a test drive and he said his does the same thing. He said they upgrade the slip yoke to a high nickel piece and that is all you can do. He said it has something to do with a binding in the slip yoke at the transfer case or trans (2wd). He admitted that is a design fault that can't be fixed. If you a 2wd you can lube the yoke, but if you have a 4wd you shouldn't use the lube. He said the lube will clog a pick-up screen and cause the transfer case to "burn out". I guess the ATF isn't compatible with the lube. So if you have a 4wd you're SOL to fix this. I glad GM uses the public for their R&D. What a joke. A new truck that is a clunker. Why not put a suitable drive shaft in from the get go. Maybe something with a slip joint built in.

 

The Nickel yoke is suppose to be slipperier but it doesn't help much. You can lube the 2500HD's rear slip yoke. There is no pickup screen or pump in the transfer case. He might be thinking of a 2WD 2500HD (no transfer case). Either that or he's confused.

 

DEWFPO

[gibbons948]

i heard the whole issue is inside the transfer case. the hole that the fluid slings through is to small and the slip yoke doesnt get enought lubrication.