How long does this occur each time? If it is for just one or two seconds, lightly tap the brake pedal while holding the accelerator pedal steady. If the shudder stops, then occurs again a couple of seconds later, that is the torque converter locking up. The most common cause of that is the transmission has the wrong type of fluid in it or an additive has become depleted. The lock-up clutch is grabbing too aggressively. It should be allowed to slip a little, and engage gradually.
This torque converter shudder can last much longer too, but the clue will still be it stops when the brake pedal is pressed. Also, this is not felt in the steering wheel.
If the steering wheel is vibrating, it is more likely a part is loose or worn in the steering or suspension systems. Have it inspected at a tire and alignment shop. The people there are experts at finding the causes of noises, vibrations, and bad tire wear.
A worn universal joint can shake the entire truck. That vibration will be about six times faster than wheel speed. You may also hear a loud metallic clink when shifting between "reverse" and "drive".
Sunday, February 19th, 2017 AT 8:50 PM