Unbalanced front wheel.
you may have a broken transmission mount,check it closely.
I assume that when you are about to be eaten by a Grizzly, you would indeed shake-up or vibrate...
YES it can, but the engine would vibrate and shake if it did.
Busted motor mount.
This happens mostly when it runs out of fuel.
Loose motor mounts.
Can be a bent wheel, tire out of balance, or worn suspension parts.
check your motor mounts if not than it might not be your motor but the pavment your driving on.
did you find out??? I'm having the same problem
Wheel bearings and allignment. Can be tires as well and sometimes even a bad motor mount.
Check for warped front rotors. under slight brake application it may not shake. But under hard braking such as getting off an offramp the truck will shake and the brake pedal may pulsate slightly. Chances are real good this is your problem.
Out of balance or damaged tire(s). Damaged wheel(s). Engine misfire. These are the three most common culprits.