Question about 1991 GMC K2500

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Why is there trans fliud leaking from the yoke on my 1991 gmc 2500 pu but its only where the u-joint is not by the seal or on the yoke shaft

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  • 39 Answers

Replace faulty yoke,test drive vehicle,inspect for leaks.
Good Luck...
Yoke weld bead is porous and fluid seeps out.

Posted on Oct 11, 2010

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1 Answer

I have a leak of grease from the back of the truck between the rear tires under the truck. What could it be?


Sounds like a bad seal from pinion gear output shaft. ( if rear wheel drive ). To repair, take drive shaft off by removing the 2 u-bolts at the rear of shaft. A screwdriver is handy 2 pry shaft forward enough 2 remove shaft. This is the tricky part, the 2 bearing caps on u- joint r gonna want 2 fall out! Have a length of tape handy & run tape around the caps so u dont loose dozens of lil needle bearings. Also, ur gonna loose oil outta the rear of trans so use a pan 2 catch drippings. Next u have 2 remove nut holding rear yoke, where u-bolts were, find appro puller, remove yoke. Seal now should b avalible 4 rmoval.use seal puller, le. screwdriver&bfh, install new seal & rest is reverse order. Dont loose ur bearings,the're hard 2 find in the dirt! I kno 1st hand.

Aug 08, 2015 | Cars & Trucks

1 Answer

Gear oil leaking from rear of drive shaft


You need to replace the seal for the pinion. ou need to remove the drive shaft off the pinion yoke thene you will find a big nut in the center of the yoke that has to be removed but before you remove the nut check to see if there is any kind of play on the yoke if there is play the pinion bearing will have to be replaced if that is the case your better off having a mechanic do the job. If there is no play remove the nut pull the yoke off replace the seal and reinstall in reverse order.

Mar 06, 2014 | 1986 GMC Jimmy

1 Answer

Will engine and trans form a 1996 chevy 4x4 pu fit into a 1991 chevy 4x4 pu


WELL YES YOU CAN PUT THEM ON BUT NEED TO REPLACE THEM WITH WIREING HARNESS AND COMPUTERS AND EXUST SISTEM THATS THE ONLY WAY THEN YOU WILL HAVE PROBLEM GETING IT TO SMOG UNLESS YOU TAKE TO STATE SMOG REFERY

Nov 28, 2012 | 1991 Chevrolet Silverado 2500

1 Answer

Output shaft seal leaking put in a new one still leaking ??what could cause this it only leaks when driving the truck ??


the shaft most be wearoff in that section or,and there is some vibration on shaft caussing damage to the seal

May 18, 2011 | 1991 Chevrolet C/K 2500

1 Answer

2004 Explorer: Rear differential cover is leaking, how do I fix i...


put flat pan under the housing remove the bolts holding the cover usually 10 or 12 (1/2 or #12 metric) bolts? allow the rear end grease to drain... then scape off the old gasket clean with brake cleaner spray install either new gasket or form one with oil resistant silicone put the cover back on , dont refill the fliud for at least 12 hours if using silicone. Also check the front driveshaft rear end yoke seal....they sometimes leak making the illusion of a rear end pan cover leak...if that is leaking you remove the shaft carefully...remove the large yoke retaining nut, replace the press in seal...be sure retaining yoke nut is properly torqued when reinstalling .

May 06, 2010 | 2004 Ford Explorer

1 Answer

I have a oil leak where the u-joint but's up to


you will need a puller , and no doubt an impact.

remove drive shaft , udo large nut with impact
and then yoke with puller , then seal is removed
and new seal installed and reverse rest of procedure

labor time is about 1hr and part about 20.00 save
yourself a headache and have a shop do it.

Nov 22, 2009 | 1989 Dodge Dakota 2WD

3 Answers

It sounds like something is slipping when you stop and start the truck. I jacked it up and saw transmission fluid leaking from the rear at the yoke


Sounds like your driveshaft u joints are worn out and need replacement and a bad extension housing seal.

Oct 28, 2009 | 1991 Chevrolet C1500

1 Answer

How do you remove hub to replace universal joint on 2500 dodge ram hemi heavy duty 2004


Mark position of drive shaft and yoke - to install in the same position (not to upset balance)
Remove and discard small "U" bolts on yoke Slide drive shaft up spline end to dislodge drive shaft from yoke.
You can either "beat" U join out of shaft, but better to bring to auto parts store that has a machine shop to install new joint
Use new "U" bolts to install
Make sure "U" joint is fully seated in yoke and installed in same position as removed

Oct 06, 2009 | 1998 Dodge Ram 1500 4WD

2 Answers

93 gmc suburban - ujoints?


Yes you can rebuild the tailshaft and there are bearings inside of is. Does the yoke seem to be smooth looking meaning no major marks?

Feb 05, 2009 | 1990 GMC Suburban

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