Did you replace the battery? I am trying to determine why you changed out the alternator which charges the battery, and the starter which only starts the car. The 2 are only related through the battery. One system does not rely on the other. As you drive the alternator puts a charge out to recharge and maintain your battery. Your starter only engages when you turn the key to start the car and this draws a lot of voltage from your battery. Try to explain in better detail: Like the car will try to start, it will start but won't keep running or the car won't even turn over, or I am getting a clicking sound. The better you describe the situation the easier it is to get you pointed in the right direction
Does it have compression at the proper time? Timing chain?
The 'starter' actually turns the flywheel, enabling the car engine to start. The 'alternator' supplies AC & DC current to the electrical components of the engine and vehicle.
It is most likely a problem with the alternator. Take the vehicle to an auto parts store such as Auto Zone and ask them to check the charging system.
The neutral safety switch could be bad or the ignition switch is bad .
Sounds like the alternator is gone.
The alternator,or starter might need replacing,or the battery might be dead.
Starter is located underneath plenum.
most likely tha starter is bad or the power to the starter is bad
check the pcv valve
Whats the best way to change a starter on a 2001 silverado
It depends on your starter.
well my starter ingage when i put the the batterie cable on , new starter selonoid, starter,altnator, so whats the problum