Took my truck to the dealer and they checked everything out. Balanced the tires. They still didnt fix the vibration and loud muffler sound i have at cruising 45 pmh. Do you guys have any suggestions what im suppose to do. I know with 8500 miles on it they wont buy it back. I really dont want to be driving it down to the dealer 50 times to try and fix it. Thats alot of time and a pain in the but. A 25,000 dollar truck and it has been nothing but a pain. Im open to any ideas fellas.

 

Hemi?

Did you try running in 5th rather than D?

 

You sure you are not just hearing and feeling the MDS? (Fuel saver) Go into your EVIC and make sure that you have the fuel saver indicator turned on. I'll bet what you are noticing is the MDS kicking in.

 

That is why I said run in 5th, if I am not mistaken MDS will not engauge.

 

Or just hit the tow/haul button. That'll disable MDS and OD too.

 

There you have it. Go take it for a drive and report back.

 

I dont care if it is the mds. Its not normal for a brand new truck to run like crap at 45 mph. . But yes the eco light is on. But it dont do it at 60 with the eco light on.

 

By the way if it matters. 2010 reg short bed hemi 2wd slt. 3.21 gears 20" wheels

 

The MDS sounds and feels different at different speeds, and its likely to be more noticible in a super short wheelbase truck since you are sitting that much closer to the muffler.

I'm going to assume that "run like crap" is a relative thing since the dealer isn't finding an issue.

 

No your wrong. Its very loud and noticeable. My back solid glass window vibrates from it. My friends have rode in it and said what the hell is that ! If it is normal for the mds to do this, then i guess i will have to trade it in on a chevy, because this is not right.