TRUCK WONT START!!!
 

my truck wont start. my step dad just used it to go to work and back and when he got back her turned the truck off and walked away. and i went and tried to start the truck and got nothing. i get the lights on the dash and radio and such. i get my glow plugs saying they are warming up and everything acts normal. then i turn the key all the way and i get nothing except the i think its the temperature gague, goes way to the right (not sure if thats normal)
and i hear a noise but its not the engine turning over its more like a humm? but not as consistent. need help soon! looked at old posts and tried checking the points on all the batteries and the starter was put on two weeks ago so that should be fine
any suggestions help thanks:argh::argh::argh::argh::argh::argh::argh::a rgh::argh:

Make sure starter wires are tight.

just checked the starter wires. they are all real tight. tried banging on the starter. still nothing
and the humm sounds like a really fast er er er er er er er

What kind of truck is it??

94 chevy 1500 4x4 with the 6.5L turbo diesel automatic tranny

does it almost WHINE? it sounds like the bendix isn't pushing out on the starter,

its not really a wine its almost like a slightly lower version of a kid running a stick along a fence quickly

Try jumping the starter with a screwdriver and see if it does any thing different.

how do i jump it with a screw driver?

check the batteries, sounds like it isn't producing enough amps to crank the starter and you hear the solenoid chattering, could be either the batteries are tired or the alternator is failing.