06 Silverado 1500 cranks over tries to start but no start

One thing at a time , check all fuses , pull the radio one so the battery doesn't go dead , check for proper fuel pressure some vehicles are particular just having it won't do , check for spark and injector pulse , what do the plugs look like are the plug wires beat ?

There are myriad reasons why an engine will crank over but not start. Could be fuel, spark, compression, electronics, etc. Start at the beginning by reading OBD codes. Track down the reasons why those accessories aren't working; might just be a bunch of blown fuses. With all this, you need to be systematic, going from one thing to another, fixing each as you go.