Trans Fluid Drip When Parked Front End Incline

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

YukonCrazy

Full Access Member
Joined
Jun 13, 2013
Posts
349
Reaction score
46
Location
Raleigh, NC
My driveway has a little incline to it. If I park in the driveway forward with the front end of the vehicle slightly higher than the back, there is a small puddle of what looks like transmission fluid on the driveway.

If I back the vehicle in the driveway where the front end is at a slight decline, no puddle or drips.

A while back I replaced the transmission tail housing and trans mount, which seemed pretty straight forward.

Any idea on what would cause this? Is there some seal I messed up when replacing the tail housing?


2008 Yukon SLT 2WD 4.7 Flex
 

mizzouguy

Full Access Member
Joined
Apr 7, 2015
Posts
523
Reaction score
153
Location
Lake of the Ozarks, MO
Id bet the output shaft seal is leaking. Would make sense with the angles. Check u-joints while you are under there, a bad one can take out seals. Assuming everything else is ok with the trans parts you replaced.
 
OP
OP
YukonCrazy

YukonCrazy

Full Access Member
Joined
Jun 13, 2013
Posts
349
Reaction score
46
Location
Raleigh, NC
Id bet the output shaft seal is leaking. Would make sense with the angles. Check u-joints while you are under there, a bad one can take out seals. Assuming everything else is ok with the trans parts you replaced.

Is the shaft seal between the tail housing and the end of transmission? Easily replaceable? The u-joints were replaced same time as tail housing.
 

mizzouguy

Full Access Member
Joined
Apr 7, 2015
Posts
523
Reaction score
153
Location
Lake of the Ozarks, MO
When you slide the driveshaft out, it is driven in right into the end of the tailshaft. Some are "booted" have a rubber boot that sticks out a ways to try to keep debris out of the sealing area, and some are non "booted". I'd get th.e booted, part number depends on which tranny you have.
 

Forum statistics

Threads
132,412
Posts
1,867,628
Members
97,073
Latest member
Mazzmanian

Latest posts

Top