* Strong Battery: A fully charged battery provides the necessary power for the starter motor to crank the engine. If the battery is weak or failing, starting would be difficult or impossible.
* Good Starter Motor: The starter motor is responsible for turning the engine over. A faulty starter can lead to slow cranking or no cranking at all.
* Functional Ignition System: This encompasses several components including the ignition coil, spark plugs, wires, and crankshaft position sensor (CKP). A problem in any of these areas prevents the engine from firing.
* Fuel System Integrity: The fuel pump, fuel injectors, and fuel filter must all be functioning correctly to deliver the proper fuel/air mixture. A clogged fuel filter, faulty fuel pump, or bad injectors would prevent starting.
* Proper Air Intake: The engine needs air to burn fuel. A severely clogged air filter can restrict airflow enough to cause starting issues.
* Computer System: The PCM (Powertrain Control Module) manages all the engine's systems. A malfunctioning PCM could prevent the engine from starting, although it's more likely to manifest as drivability problems rather than a complete inability to start.
In short, your GTP starts every time because all the above systems are likely functioning correctly. If you *were* to experience starting problems, investigating those systems would be the appropriate course of action. A reliable start is a good thing, but don't assume it will remain that way forever. Regular maintenance, including battery checks, is crucial for long-term reliability.