My 99 jeep grand cherokee will not start. My battery has a good charge and the starter was replaced less then a month ago, have lights, windows,ect. turn key and nothing! need Help.

Could be a faulty starter or bad connection between the battery and starter. You could use a meter to check for voltage at the starter but it will not show resistance in the cables.

If the battery voltage gauge goes to zero, it may be a bad connection at the battery.
Batteries generally last an average of only 3 years, but they will go bad gradually until the voltage drop on starting will drop below levels that the car can run the starter.

Try a new battery, they're not too expensive at Walmart or Sears or a local auto parts store.
Try the largest CCA capacity battery you can buy and you won't have regrets, in my experience.

Good luck on this repair.

I had similar prob - no rhyme nor reason as to when, where or why it wouldn't start. After two new starters the shop finally found a starter wire/cable that was corroded on the inside. Mech' could move it back and forth and it would / would not start. Changed cable six months ago - no problems since. Hope it helps.

probably have leak recharge and have dye put in leak will then show up with uv lite

it could be starter or altinator
try another battery if it starts with that its your altinator
if it was your starter it would make a clicking or whiring noise when you try to start it.

You need a new battery. The lights only take about 10 - 15 amps, the starter takes 200 - 400 amps, Replace the battery and all will be well

the solenoid on the starter is the trouble,if you hear a click sound when you try to crank engine

Do you have an alarm on this? If you do, that is most likely the problem. There seems to be a problem with the alarms. You may want to have a new key made just in case. Sometimes the keys are magnetically charged and after time, it wears off.

If you installed a stero system make sure the amp is not on all the time. Other than that try testing the starter and components.

have the alternator regulator and diodes tested. sometimes when the regulators fail they allow ac voltage to go to the battery. ac voltage doesn't charge the battery properly (causes it to deep cycle and shortens its life) and causes all sorts of funny problems with the car. also make sure the battery is secured properly, vibration isn't good for them at all.