Why will my 2013 chevy equinox turn over but not start after changing the alternator, battery, and starter?

SOURCE: 1999 chevy blazer won't start

First of all make sure all your battery connections are Clean and Tight. If they are and all your dash lights come on and its not starting But its cranking over Your anti theft alarm may have gotten activated. You may have to leave your Key in the On position for 20 minutes to reset the alarm. Not cranking just in the on position, Now if its not Cranking and your hearing a clicking sound it may be your starter. I have sometimes tapped on the stater with a deadblow hammer and had someone crank it over Making sure your in park foot on brake and being EXTREMLY Carefull that you are not going to run someone over. If that don't get you going Get back to me we can do some more trouble shooting. Get that thing going for you. Thanks, Bear001

SOURCE: battery

the battery is under plastic.
poop the hood and stand right of center and look down.
its close to you under the plastic with 3 screws.
take those off
behind the battery is a piece of plastic that keeps the batter in place
you have to remove it
then you have to remove the posts. remove negative first then positive.
done with remove go backwards to put it in.

SOURCE: 1994 Chevy Astro Van- four wheel drive

Sounds like the auto shut down relay. Located somewhere in the front grille/bumper area. Relay triggers on impact to shut down all power in order to prevent fires etc. Great idea but can cause exactly the frustration you are having if you don't know it's there!!

SOURCE: 96 dodge neon alternator and starter syop working

one thing to check is the positive and negative battery post's. check for any corrsion and even do a voltage test to the starter. check the grounds. The battery might be bad have you tryed to jump it? The battery light comes on when their is a dop in voltage in the sys.

SOURCE: 2006 Chevy Equinox won't start,

sounds like you have a starter solenoid problem. Or maybe loose connections on solenoid.