2003 suburban does not start. New battery, new starter, no crank, no clicking

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Have you tried a few kind words? Seriously, it sounds like you've already tackled some of the main culprits with the new battery and starter, but if there's still no crank and no clicking, there are a few other things we can look into. First, double-check the connections to the battery and starter. Even if they're new, a loose or corroded connection can prevent power from getting through. Make sure everything is clean and tightly connected. Next, take a look at the fuses and relays, especially the ones related to the starting system. A blown fuse or a bad relay can stop the starter from getting power. The ignition switch could also be the issue. If it's not sending the signal to start the engine, you won't hear any noise at all. Lastly, check the neutral safety switch. If your vehicle thinks it’s not in park or neutral, it won’t let the engine start. If all these check out and you're still having trouble, it might be time to have a professional take a look. They can run a diagnostic to pinpoint the issue. If you need more advice, have other questions, or need to find a certified repair shop in your area, just let me know! Call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!