2004 GMC Yukon Denali

Check the fuel pump. When you first turn the key to the on position before trying to start it. You should hear the pump near the back of the vehicle like an electric whine or humm. If you hear nothing that might be the issue.

Check the dash driver information screen. If it says unknown driver you must reset the passlock system. The car thinks it is being stolen and shuts off the fuel pump. This happens if you disconnect the battery sometimes if you are not supporting the system with additional power through the obd port.

How to reset unknown driver onGMC 2004 Yukon

Usually the gas pump goes bad, even when your heat the pump going on, don't create enough pressure, if you have a fuel pressure, use of not I think it's the pump