Why alarm go off whin u turn on - 1999 Dodge Durango

no info generic answer was it bleed of air --correctly installed --fluid replaced correct level---possible rack or gear box failing

1) Most likely.
Your starter is an electric motor, with a gear on one end.
Mounted on that same end is a part called a "Bendix" or an "overrunning clutch".
When that just mentioned part fails, the starter will not engage the flywheel, and you will get the noise of which you spoke.
2) Less likely.
If your timing belt fails, he engine will turn over at a high rate of speed, but it will not start.
God bless your efforts.

A whinning noise while turning is an indication of a worn bearing. The extra pressure put against the bearing/race during the turn and the closing of a gap creates this noise.I would chech the axle bearings on the side of the truck on the outside the curve when you hear it. What I'm saying is if you hear it when you turn left....check the right side bearing

check alt bearing,open hood & listen while running,turn off engine and remove drive belt then start engine to see if noise goes away.

You may be hearing the starter gear that's engages the flex plate/fly wheel turn but not actually coming out engaging

The alarm is working now or the starter is non operational, Try wiggle the transmission selector. And what type of alarm do you have is it aftermarket or manufacturer

MANUAL TRANSMISSION OIL GOT TOO LOW.CHECK MANUAL TRANSMISSION FLUID SOUND DRY.

Bad wiring in your alarm system. This needs to be looked at be a professional. I hope this helps.

replace the "combination switch". (turn signal, hi-lo beam)

NEED TO REPAIR