Vibration at full throttle

15silverado · January 31, 2015

I tried a search but nothing matched. If I'm pulling out somewhere and im at around 5 mph or above then floor it the truck will vibrate or kinda shake almost like wheel hope but I know it's not that. I also climbed under to check u-joint or anything is loose. The truck only has 1500 miles on it and it's done this since around 800 miles. Also I was able to move the tranny and transfer case up about a 1/2 inch. Is the trans mount supposed to be that soft on these trucks?

bdbake01 · February 1, 2015

*#%^ gets crazy under 355+ hp. Just sayin.

pm26 · February 1, 2015

I tried a search but nothing matched. If I'm pulling out somewhere and im at around 5 mph or above then floor it the truck will vibrate or kinda shake almost like wheel hope but I know it's not that. I also climbed under to check u-joint or anything is loose. The truck only has 1500 miles on it and it's done this since around 800 miles. Also I was able to move the tranny and transfer case up about a 1/2 inch. Is the trans mount supposed to be that soft on these trucks?

Wheel hope?

15silverado · February 1, 2015

Wheel hop. Stupid iphone

POS VETT · February 1, 2015

Could be the engine and transmission mounts movement.

15silverado · February 1, 2015

That's kind of what it feels like but didn't know if it's normal.

Dozzer LTZ · February 3, 2015

Mine does this also. Thought at first maybe just torque management to keep the tires from breaking loose but now I'm leaning more towards torque converter not locking to protect things, not sure does feel odd though. I do know that if you hold the traction control button down for a few seconds to turn it off and stabilitrac then hold the pedal on the floor from a stand still it will smoke the tires and turn sideways which surprised me..

JB Trucker · February 3, 2015

Mine does this also. Thought at first maybe just torque management to keep the tires from breaking loose but now I'm leaning more towards torque converter not locking to protect things, not sure does feel odd though. I do know that if you hold the traction control button down for a few seconds to turn it off and stabilitrac then hold the pedal on the floor from a stand still it will smoke the tires and turn sideways which surprised me..

I bet that's what the guy did on Airaid CAI install video, couldn't have added that much HP

Nail_bender1 · February 7, 2015

Hello, I am new here to the forum so excuse me if I don't respond correctly. I had this same problem and I took the Truck to the dealer. They applied service bulletin # PIP5211B.

Reposition and re-torque both engine mounts. This seemed to fix the problem, much smoother now.

scott19677 · February 16, 2015

I haved noticed today that when in auto 4X4 I do not feel the "shudder" for lack of a better word in first and second gear. So that 'kinda leads me to belive it may be TQ MNG. But then at 50 to 60 mph horrible vibes appear! What gives? Were in the middle of an ice storm now so Im gonna do my own cold weather testing. SHAKE &BAKE.