I had a few questions.

My allignment on my 94 s10 blazer is a little off. To go straight i hold the steering wheel a bit turned to the left and if i let go the car vears to the right.
At high speeds lets say about 75+ the truck starts vibrating.

I was wondering if this is a common problem? Is it due to the allignment or is it another problem thats fixable.

Just the other day i noticed i was leaking something on my driveway, it had a yellow tint so i looked at the overflow tank from the radiatior and it was empty. I proceeded to look in the radiator to find that it was dry.

I noticed the leak coming from towards the back of the engine and i plan on finding the leak tomorrow afternoon but was wondering if anyone has ever had any problems like this before.

 

Number one on your list the vibrations, I would have your truck aligned and the wheels and tires balanced. Second on your list the coolant leak I would check your oil dipstick first to see if the coolant has mixed in with the oil, that can be a sign of a blown intake manifold gasket, if there is no coolant in the oil then I would fill up the system and run it for a lil bit while checking for leaks.