Am I missing something after valve job and truck won't start now?
5.7 Vortec engine in a 1999 Yukon SLT. Took the heads off for a blown valve seal, had all seals replaced and heads milled. Truck sat for 2 weeks before I got to put everything back together. By everything I mean the lower and upper intake, distributor, alternator, ignition control module and coil, throttle body, spider assembly, took everything off to clean up and put back on. All connections are plugged back into the right sensors/spots. The truck will crank but won't start. Engine is turning. I have fuel to the spider assembly and fire from all spark plugs and wires. Changed cam and crankshaft sensors also. Is there something I'm overlooking?