Problem is likely the oxygen sensor (located on each of the exhaust manifolds). These are a common problem and can be replace by the average diy shade tree mechanic. 10 minutes each with a cool engine.
Could be time for a tune up.
What vehicle is this for?
The blower motor speed resister is burned out.
tire pressure low or bad sensor
Could be out of balance Tire may be worn and need replacement Could be a bent wheel
It would depend on what you call low speeds.
Have your truck alligned. Vibrations on low speeds means your vehicle is out of alignment and or worn or damaged suspension parts...
It may just be low on fluid.
NO
Not running on all cylinders Check plugs, wires Do compression check
No... sounds like an electrical problem.
Squeking at low speeds? Its your coil springs in your suspension. Have them fixed and the problem should be solved.