Fuel not getting to throttle body

is your security key lamp lit on dash.

New pump and filter replaced....I would check out the injectors to make sure they are not clogged...I have a 94 z 71 and had to rebuild entire throttle body..I know it's a diff yr model but troubleshooting is same direction...also have the fuel pressure regulator checked for any problems

no fuel is getting to engine, check fuel filter, or a bad fuel pump. check the fuse and relay for pump. have a good one!!

was fuel pump changed and lines flushed---turn key on if fuel pump hums system should pressurize turn off and under hood check to see is gas is present in fuel line[have rag handy and press valve down at fuel test port which is in line between distributor and throttle body if no pressure filter clogged or pump not working -if fuel and water need to drain again -if fuel than need to test throttle body -spray some starter fluid into truck if starts or sputters than still have problem with fuel delivery --

does anyone know where the throttle position sensor is located on a 1997 chevy Z71 truck ?

check the fuel filter to see if it is getting clogged and not letting enough fuel through it. make sure you have proper fuel to throttle body so it will run properly. if this does not help much, check idle air control valve.

Did you check fuel pressure to make sure you are getting proper fuel pressure? If it will start with starting fluid then it has to be either fuel related or electrical. Are you getting power to your fuel relay? When you turn the key on can you hear your fuel pump come on? I would not use anymore starting fluid at all to try and start it other wise you cause major problems.

Check the fuel line it may have a small hole that is allowing air in. If air is getting into the line the fuel will flow back into the tank. Happend to me one day and it turned out to be the clamp.

Definitely check for spark next. let me know what you find.

Had the same problem with my '96 Silverado with 350 Vortec. The truck would only crank. It would start if fuel was poured down the throttle body. Could not hear the fuel pump hum. Fuse was good, but could not hear relay click. Relay was good, Did some electrical wiring trouble shooting. Turned out that one of the connectors that clasp onto one of the pins of the fuel pump relay wasn't making a good connection, too loose. I just stuck a peice of wire into the connector and pushed the relay back in. Relay clicked, Truck Started. It's been more than 4 yrs. since I made that McGuyver fix. Still firing.