Stuck- 1 wheel spins (2007 Auto LSD)

Question for you guys. Got stuck today crossing a small ditch. As soon as 1 rear (passenger side) wheel went in the air, just spins & the one with traction wasnt doing anything..

2007 Sport with Auto LSD

Im assuming there are clutches in the rear end, does this indicate they are bad?

Would pressing the emergency brake to simulate traction with the wheel in the air done anything to help?

Just trying to understand the limitations as i had to have someome pull me out.

Thx

 

I have used the parking brake in that manner and it can be of some use on a 2WD with open diff. Not sure about your other question... seems the LSD should have helped.

 

Yes, I would expect a little help from the parking brake would help.

 

You have an open diff , as others have mentioned pull the e - brake out (5 clicks) . This will allow your axle to feed equal power to both rear wheels

 

In my experience a limited slip diff is quite limited in how helpful it is. Using the parking brake, or allowing traction control to work will help in some situations. But this is the most extreme situation. If you had 4X4 then the front wheels could have helped. Otherwise nothing less than a locking rear diff would help with this. Nothing wrong with the truck, you just exceeded it's capabilities.

 

Used my ebrake in a tough situation, today I’m bad

 

Thanks guys, good to know. Appreciate the info.

 

Mine has always done that as well. When I regeared I put in a Detroit True Trac which is like a limited slip but supposedly better and without clutches that wear out. I did it thinking the LSD clutch pack might have just been bad. The true trac does help, in the sense that often both wheels turn now in a burnout instead of just doing a one wheel wonder, but I'll still lose power to a wheel if it's completely in the air. It chatters a bit if I'm gassing it hard while making a turn from a stop though. In case you were thinking about upgrading the limited slip

 

if im not mistaken only 09+ trucks had auto lsd.

05-08 trucks had the actual mechanical clutch pack LSD that do wear out over time.

 

You have found the limit of your limited slip. Whether it's electronically brake actuated, clutch type, gear type, etc. there is a limit to its effectiveness. Any mechanical style is useless once one wheel has zero traction as they need some grip at both wheels to function. This is why LSD's are great for performance at speed on roads and tracks both pavement and dirt. Electronic brake actuated systems can work with zero traction at a wheel but it must be very aggressive and it can be very hard on your brakes. For every ft*lbf that system gets to the wheel on the ground it must "waste" the same amount against the opposing brake. It's rough on your equipment thus most systems aren't tuned that aggressive. When terrain is rugged, traction is low, and getting all available torque to wheels with grip is at a premium, it's time for a real locker.

 

Thanks for the info.