Check your wheel bearings, tie rod ends, balljoints and CV axles. A bent rim will also cause a shake at high speed.
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
If you are referring to vibration when you hit your brakes in a car, it could be that your rotors are warped or your wheels could also be out of balance, or both.
If you have vibration when you use the brakes, the most likely cause will be warped or excessively worn rotors, usually on the front wheels. Unless you are familiar with working on brakes, it is best to take the car to a qualified mechanic for service or repair.
If you suspect something, get them checked. If you get vibration while applying the brakes, get them checked. If you get grinding noise from the brakes, get them checked.
This is probably due to worn brake rotors on the brakes, if there is no vibration when driving then this will be the cause.
warped rotors , bad brakes,tie rods, tiresbad ,
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts.
Vibration when applying brakes is most likely warped rotors. Another cause could be loose caliper bolts. The vibration while driving is most likely a tire issue ie (out of balance, broken belt in tire, bent rim). Other possible causes are loose/worn suspension and/or steering parts.
Steering wheel vibration when applying brakes is usually caused by warped disc brake rotors
If it shakes only when the brakes are applied, its the brakes. Just because they are "good" and stop the truck well doesn't mean they are balanced and wont cause a vibration.
brake caliber
the brakes cause the vibration as for the doors it's probably a relay or inline fuse blown somewhere