From a dead stop straight away take off, my rear end has a little hop to it. It feels like I'm in sand and the rear end is bouncing. It only does it for a few seconds and goes away and doesn't do it if you I turn right or left from the dead stop. The Dealer told me to drive on it for awhile and see if it will go away but I think it just needs another bottle of friction modifier. What do yall think? Has any one had the same problem? The truck is a 07 and has done it when I picked it up Saturday with 30 miles on it and is still doing it today with 1,329 miles on it.

 

Mine does it.(it'snot going away) Friction modifier is not needed. Ladder bars and weight in the back are about all I know that will help.

 

all that torque going to small tires. mine did it at first and now 7k it does not.

friction modifer will make the rear end worse, as it is not required.

 

hoping, i think, isent good. DO NOT PUT FRICTION MODIFIER IN DIFF.the gears were cut in a way that it wont like it (os i hear in thit forum).

 

My 06 never did it and I ran the same tires on that truck, I know with my positrack friction modifier is needed for it or am I wrong?

 

the AAM 11.5 says NO FRICTION MODIFIER.

 

No friction modifier needed,but it will not hurt it either.

Bob

 

I can't find my axle ratio anywhere (glove box, hood, ect..) what are the options for the 07 2500's?

 

Check Here:
https://www.dieseltruckresource.com/...d.php?t=149087

 

Are you sure its axle bouncing or is it drive shaft shudder this is a common prob with multi peiced drive shafts?

 

Well, I had a horrible experience in my truck while trying to climb a small hill. It was a sand, small rock base, & I was going slow & then suddenly the truck started hopping so violently that I thought I broke something. It was quite embarrassing to have a $35K truck do that.

I then came home and did a research on what this could be. It was a VERY COMMON problem called "wheel-hop". Guys experienced it in the snow, soft dirt and sand. It can do some major damage to the truck drive train parts, as the wheel-hop is so violent and brutal on u-joints, differential, etc.. Basically, the leaf springs twist and start to snap back so quickly and violently that it causes the wheel-hop. In the end, it is NOT GOOD to your truck. So, with my research I decided to get the GDP Ladder Bars. www.glacierdieselpower.com

WOW! I installed them the night before and took the truck out for a 100 mile road test. There is a GREAT improvement. The way I describe it, is that it is like having 1000LBS of weight in the bed, the rear-end is PLANTED. Before the back-end was VERY "hoppy", "wobbly" and "jiggly". When going over bumps the back-end would dance around and felt unstable at times.

Now, with the GDP Bars, the read-end is glued to the ground. Any bumps in the road, the truck handled great and the back-end stayed planted, it no longer wobbled and danced around like it used to. I haven't had a chance to try them in the snow or sand but I know that my wheel-hop WILL BE GONE! The truck handles better and feels much more stable on the road.

So, unless you drive around with 1,000LBS+ in your bed, I highly recommend the bars. They will eliminate wheel hop, the truck will handle better and be a lot more stable on bumpy roads. Plus, they are a TRUE bolt-on. I had to do no drilling. The only thing I had to do was slightly bend the brake-line bracket on the pass-side to get clearance (took 1 minute). I used Synthetic Disc Brake Caliper Grease on the bushings and bolt sleeves.

I love them! Now, my truck won't rattle my fillings loose again.

 

JC Whitney sells some traction bars made by Tuff Country for around $150.00. They should work on a 2500 but would not work on my 3500 due to the overload springs. I modified them to work on my truck and the ride got much worse. My truck bounces all over the road when I hit a bump so I think I will end up with a set of the GDP ladder bars one day.......

 

Do people have wheel hop in the sand when they are pulling a trailer, or is it only when it's empty?

 

I read that a weighed down bed HELPS but does not solve the problem. It comes down to this, the motor makes a lot of torque, as the tires attempt to grip, it drives the axle down, thereby causing the leaf springs to twist. Once this series of events takes place, the leaf springs begin to snap back violently and it goes from BAD to WORSE, really fast.

With a ladder bar setup. It prevents the axle from twisting and the leaf springs from twisting and slapping back. Trust me, if you get A LOT of wheel hop, your u-joints will not last. Not to mention, the stress on other parts.

GDP Ladder Bars are pricey but they are a true bolt-on (no-drilling) and are built like a tank. In the snow, I have read of many people getting wheel-hop on the stock setup. The ladder bars provide 1000x better traction in the back both when dry and wet.

 

Maybe I did not feel it in my 06 b/c it was a 6spd. If this is how the truck is I can live with it, is it going to hurt anything?