How do you trouble shoot fuel line on a GMC Safari Van 2003?

To troubleshoot the fuel line on a 2003 GMC Safari Van, first, visually inspect the fuel lines for any signs of leaks, cracks, or disconnects. Next, check the fuel pump operation by listening for it to engage when turning the ignition on, and use a fuel pressure gauge to ensure the system is maintaining proper pressure. Additionally, inspect the fuel filter and ensure it's not clogged, as this can restrict fuel flow. If necessary, follow the lines to the fuel injectors and check for any blockages or faults.