How do i tell if i have limited slip?

[CBrabec]

I know that I don't have the limited slip in my truck, but the other day I was backing into a parking stall at work and with snow still on the ground, I didn't have it in 4wd & both my tires were spinning. Yet on dry pavement, I can only turn my back passanger tire during a burnout. Why were both spinning when slowly backing up into the stall on snow?

 

[NC_Mog]

Chock the front tires to keep the truck from moving. Jack up the rear (both tires), and with the truck in neutral and not running, rotate one tire. If the other spins in the opposite direction you have an open diff. If it spins in the same direction, then its a LS. This is the safest method short of pulling the diff cover.

I have an 06 and when i bought it i really didn't pay attention to wether it had limited slip or not... .



I am assuming "NO" it doesn't due to the way it takes off in the icy, snowy conditions compared to my 05 i had... . But i would like to figure out for sure or not...



So how do i figure it out without going outside and physically trying to spin the tires and also my glove box doesn't have a sticker in it, and i cant seem to find a tag on the rear-end if there is supposed to be one... . So can someone help me figure it out... THANKS Oo. Oo.

 

[RobertP]

Chock the front tires to keep the truck from moving. Jack up the rear (both tires), and with the truck in neutral and not running, rotate one tire. If the other spins in the opposite direction you have an open diff. If it spins in the same direction, then its a LS. This is the safest method short of pulling the diff cover.

with the new aam axle this is no longer a good way to test this. the new limited slip will spin the oppisite way if power isnt applied.

 

[RTolbert]

Go to www.dodge.com and go to customer service and fill out their questionaire (you will need your VIN No. ) and they will tell you, usually within 24 hrs. The quickest and easiest way I have found to get technical info.



SFJEFE

 

[robmints]

I’ve come to the observation that the unit does work, I don’t like how it works, but it does do what it’s supposed to. I can lay down two solid black marks on the pavement if I’ve got the Edge/ Attitude turned up. However, while turning left or right with too much throttle before hand it will just lay down one or spin the inside rear wheel ridiculously fast, following with a whole lot of smoke. In the same motion, I have found that just as the wheel speed slows up nearing the trucks actual speed, the Anti-Spin kicks in. I can feel and sometimes hear an audible clunk as it engages and the wheels generally stop spinning very shortly there after. I have tested the unit on accident when I got lost going to a very rural customers house a few weeks back. I was about 10 miles in a ravine ascending and descending very steep slopes on a partially gravel one side of the road and loose pack dirt on the other. If you could imagine I had to climb and start from a dead stop in some cases and the left side was on hard packed gravel/ worn asphalt and the right side very soft dirt. I started off slow than added a sure foot of throttle and angled my mirrors downward in the in-tow position as to be able to see the tires as I went. The result was just as it states “Anti-Spin” it left an imprint or dark mark from the tire on the gravel/ asphalt and just a regular track on the powder-loose dirt. Every time I took off slow first then goosed it, this scenario would occur. If I turned the programmer up and just mashed the throttle, all I would get is one wheel spinning and hardly any momentum forward. What ticks me off is that my girl and I went camping last summer, drove my truck down a vacant fire road where we had to cross a ditch. I didn’t want to cross the ditch square on as it was deep enough to high center the truck possibly. I eased it through the ditch in 4-High range at an angle. Front dropped in, leaving my driver side rear wheel about 4” off the ground, no big deal usually as I should still be able to proceed forward with this “Anti-Spin” differential. Wrong that wheel just spun helplessly in the air and the front “Open” type diff left my useless front right wheel spinning freely. I powered out of the ditch in reverse, shifted to 4-Low range and piled some rocks in the ravine and drove through. Seriously, this dry creek bed could have easily been crossed by a regular Toyota Tacoma truck (previously) owned vehicle, but my Dodge 2500 4x4 was almost stuck and helpless over crossing a simple ditch, because of the silly rear differential. I would just like to know exactly what situations does this “Anti-Spin actually work ideally in so I can avoid situations where it doesn’t work ahead of time.

Can't you just power brake it a little? Or do like the manual says, and put the emergency brake on? I know mine works if I do that. The truck might not go forward but rear will slide sideways and get you stuck with the rear of the truck completely off the road.