I replace a new starter on 2008 Saturn suv 2.4 4 cylinder still doesn't crank

check and test key and ignition switch circuit

Does the starter make a noise when you crank it? If not, first make sure you have 12+ volts in the battery and good battery connections. If the battery has less that 9 volts, then replace the battery. Try using a jumper box or a set of jumper cables from another vehicle to start the car. If you can see the starter, have someone strike it with a hammer while turning the key to the crank position. If it starts, replace the starter.

Do you have a good spark at the plugs?

Could mean that you're washing the cylinders could be ******* the starter. A dry start. If it's not that then replace the starter. A symptom could be poor fuel mileage or you need to change your oil. Use a Lucas additive for dry start if it's not the starter.

those vehicles are common for starters did two today alone when it wont start try to tap it with a hammer it on the back side of the engine under the intake if it starts replace starter

either you have a very bad battery, or your not guetting fuel for it to start.

Your starter must be dead

It's easy, jack up the car put jack stands under it, remove positive battery cable, on the back of the motor closes to the fire wall is the starter ( get under the car, round cylinder), remove the two bolts and drop down to disconnect positive wire and remove exciter wire, re-install in reverse

If the problem occurs after the car has been driven long enough to reach normal operating temperature, the problem is the starter. If the 'no crank' occurs cold, retest the battery.

if you have good battery voltage at this time, and when you banged on the starter and then the car cranked over, it would appear you have a defective starter. i would imagine if you replaced it in july of last year that it could still be under some sort of warranty, so i would look into that. either way, it sounds as if you need a new starter.