Bought a GMT800 Tahoe a few days ago and it has been running fine until today. Been on a few short trips today, got home, left the Tahoe for about 15-20 minutes , went to start it up to move it to its parking spot, no start. It cranks. Sounds like its gonna start for a split secound then goes back to cranking.

Jumped the fuel pump, seems to run fine

Can’t find any blown fuses.

Tried the passkey 10 min x3 reset a few times.

There is no security light in my dash, do i even have the anti theft? Key says PK3 +, but the part of the dash where the security light is according to Google pictures, i have the cruise control indicator light.

 

Need to test fuel pressure. Has the fuel filter ever been changed?