My 96 chevy Tahoe wont hold a charge and dies after about an hour. I replaced the alternator and even got a new battery. So where do I need to start looking next

The battery is not being charged and is depleted. The clicking you hear is the starter solenoid engaging. Your charging voltage should be around 14.1 volts. Check for that when you have the car running. If it is closer to 12 volts that is the nominal battery voltage and your alternator needs to be replaced! Especially important if you have a new battery since lead acid batteries do not like being in a discharged condition; it shortens their life considerably.

You have so sort of wiring issue, check the battery supply to the fuse box under the hood, it may be corroded.

Well the charge light means the alternator is not charging the battery.
You would need to get the alternator and circuits tested on the car.
It could be a bad connection somewhere or other wiring problem.

Hello,
When you say battery voltage how are you testing it? Are you looking at a gauge on the dash? Or are you physically testing it with a multi meter? If the truck is dying and you recently replaced the alternator and battery I would first suggest you to check all them connections again real good. Snug them all up. Check for corrosion and clean as needed. Did you replace the battery and alternator with new/re-manufactured battery and alternator? The alternator needs to put out at least 13.6 volts to charge your 12 volt battery or the battery will not maintain a charge. However the alternator runs the vehicle once it is started. The battery is used only to start the car and then the alternator runs it. So if your vehicle starts and runs and then dies you may have a bad alternator. Check your connections first and then test the alternator with a multi meter. Anything less than 13.6 volt will not suffice. 14+ volts would be the hopeful output of a good alternator.
regards, Tony

Sounds like the battery dies, or the alternator has stopped charging and the battery lasted as long as it could. Battery water, voltage while off and then while running if you can jump it.If you think the battery is good, take the alternator off and take it to the parts store and test it, if it is neither of those 2 , then the computer died. Check it out.

Sounds like it's the alternator. Not charging the battery. Which would explain why it died while driving.

sounds like alternator charging output is zero, should run off of alternator output after a jump start, preform a complete charging system check , Battery , Alternator, Cables...Replace as needed...

SOUNDS LIKE U HAVE A DEFECTIVE ALTERNATOR.IT WAS CHARING WHEN IT LEFT THE SHOP SO THERE IS NO WIRING ISSUE.BAD ALTERNATOR

OK if only 4 months old, charge it with an external battery charger. Once vehicle is running the quick and still most valid test I make is:
Running, with no accessories on, charge volts on volt meter (not dash gauge) should read between 12.9 &14volts. Turn all accessories and headlights on high beam. Volts should not read below 12.5v at idle and should not creep lower after running at any time, even after ten or fifteen minutes. If voltaqge is not as specified alternator has failed and needs replacement.

Sounds as if the alternator is shot.
You can take the battery and alternator in to any parts store NAPA, AutoZone, Murrays, etc. to have it load tested for free.

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