Location of the starter on a 1997 GMC sonoma... the truck starts one day and the next it wont.. just got a new battery not to long ago. wondering if the starter is the problem ir if it could be someting else.. its hit or miss on when it wants to start..

Check for spark, if there is none it's possible the ignition module is bad, but that's a generic guess.

If the engine will not crank, you'll need to know if you have power at the starter posts. It could be the neutral switch or the starter relay.

The problem is in the start circuit if the starter won't engage from the key. From battery to ignition switch to neutral park safety switch to starter relay to starter solenoid to starter to ground and back to battery-lights come on so switch is good, next check the neutral safety switch for power in and power out.
Once you get the start circuit working so starter engages from the key, then you can address the ignition circuit for possible no spark.

firstly l dont know you whether is a auto or manuel and battery powerful or not or maybe your starter problem or maybe battery flat

time for a new fuel pump sounds to me .u might try replacing fuel filter .but if that helps it wont be long for the pump.hope this helps

Have the starter checked

bad or corroded ground wire to starter or lose starter ignition wire

check your battery first,  Then measure voltage to the starter solenoid.  No voltage at solenoid the problem is at the key switch.

any spark at the plugs could be a crank sensor gone

Test your battery if it test good then replace your starter. Most big parts houses will test the battery and starter for you for free.