WHEN I TRY TO START MY TRUCK THE STARTER CLICKS ONCE, EVEN THOUGH I HAVE POWER TO EVERYTHING ELSE. ALTERNATOR AND BATTERY ARE BRAND NEW. I NEED HELP WITH REMOVAL AND REINSTALLATION OF A NEW STARTER

First, try to boot with another battery or a power pac... because even if your battery give you 12 volts..it could have died cells and you're not have enought amps..... Seond, if it's doing the same thing... check if there's not a shield ground cutted or bad on the starter or the motor that's do he ame thing... No amps... third,,if everything is ok,,it's surely the bendix

if the battery is good it is NOT the alternator. the alternator charges the battery, if it won`t start with a new battery the alternator does nothing to affect the situation. check voltages at the starter motor connections for proper voltages even the wires that the ignition switch supplies power to. if you have proper voltages at the starter you can try hitting the starter while someone tries to start the car. if it starts the starter is worn internally and will have to be replaced.

Sounds like your starter is not working,here's a link on how to remove,take to Autozone and they will test for free,takes only a few minutes.To check for power at starter,get meter and it should read 12 volts.

It sounds like you need a new starter. If you hear the starter click when you turn the key to start, replace your starter since you already replaced the battery. You might want to have your alternator checked out, or when you get your car started, test the battery terminals with a multimeter. You should have around 14 volts with the car running. If not, you will need a new alternator. The alternator won't keep the car from starting though, unless the battery was drained because it wasn't charged. Even then it is the battery keeping the car from starting.

If the starter is not clicking, check your fuses under the hood. If all checks out, you may have a bad ignition switch.

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Hard to say.
Sometimes there can be a dead spot, and just rotating the engine by hand a little will fix it. (engine could also be seizing)
But you could also simultaneously have multiple problems.
I would always suggest cleaning battery terminals, greasing them, and checking engine ground strap, for example.
If you hear the starter solenoid click, then at least it is not the ignition switch or neutral safety switch.
But it could still be the starter or the battery, even though lights look good.
The best way to be sure is with a voltmeter ($3 at Harbor Freight).
Battery should read 12.5 with engine off.
When you try to crank it, should drop to about 10.
If drops below, then starter or battery bad.
If stays above 12, either bad connection or starter solenoid bad.
When you stop trying to crank, if comes back to 12, then it was starter drawing too much.
If does not come back up, then battery was too low.

I was having the same problem with my 2004 9-3. I assumed the starter was bad and replaced it. I then charged the battery and found it wouldn't fully charge. After charging for several hours when I removed the charger I only showed 11 volts at battery posts. The new battery tested 12.8 volts and the car started well. With the car idling I tested and showed 14.6 volts at the battery post which confirmed my alternator was charging.

I do believe I replaced the starter in error and that it was just a bad battery. When my battery was failing I had dim headlights and flashing displays that you described and the clicking noises also. When I put jumper cables on my saab and let the bad battery charge for several minutes the car would start right up and the headlights would brighten up and even though the battery was bad the idle voltage at the battery posts was increased to 14.6 volts coming from the alternator.

Remember to remove the jumper cables quickly once the car starts to avoid possible electrical problems.

I have had bad starters in other vehicles that would draw a huge load on the battery and jump starting them would sometimes give enough voltage to turn the engine over and start it.

Bench tests aren't always correct because the components aren't under a true load. I had a brand new alternator fresh out of the box last year that was bad and wouldn't put out good voltage even though it bench tested perfect. Go figure.

Check your battery voltage with the engine off. It should read over 12 volts if its charged.

Its likely you have a bad alternator , it may have
dammaged your battery .
Advance auto can check it for free.

Your radio and most of your accessories will still work with a low charged battery. The clicking sound you are experiencing is most likely from a low charged battery not giving enough amperage to the starter. Were you able to start the car after getting a boost? If so, then it is your battery. Does your car cut out while driving? If so, then it is your alternator (device that charges your battery while the car is running). It is either the battery or alternator.

Clicking??? Probably starter/alternator. does the starter turn? The clicking, is that all you get when you turn the key? Have the battery checked and make sure its holding a charge. If battery holds a charge, its time to have your alternator tested, if the alternator checks, then the clicking may be the starter/soleniod. Places like autozone will check the battery/alt for free, provided you can still drive to get there.

sounds like the alternator isnt charging the battery... The starter is also possible if its not even trying though. One other possibility, is one of the battery cables may have loosened up.