Will not stay running.

[Rick Dupuis]

Hi, I have an 03 Chevy Tahoe w/4.8. It will start but it dies after 30 sec. when I start it and try to rev it up it dies right away. I hooked a OBD2 to it and I get no codes. Any idea on this. Thanks

 

[Shaw520]

Sounds like a fuel delivery problem,... Fuel pump would be my first guess....check inline filter,.. check fuel rail pressure, (cheap gauge $20)

 

[MSgt Chevy]

Fuel pump,
Try this

 

[Rick Dupuis]

Sounds like a fuel delivery problem,... Fuel pump would be my first guess....check inline filter,.. check fuel rail pressure, (cheap gauge $20)

I can hear the fuel pump come on, I’m going to change the filter first then if I have to go from there.

 

[PG01]

What year did fuel filters go in tank instead of on frame?

 

[Shaw520]

I think 05

 

[Rick Dupuis]

If my throttle body was dirty would it run the way it is. Dying out.

 

[Shaw520]

If my throttle body was dirty would it run the way it is. Dying out.

Not usually,.. Rough idle is the first symptom of dirty tb. What youre describing sounds like fuel starvation.

 

[PG01]

I think 05

Thkz.... i done forgoted-ed

 

[Tonyrodz]

What year did fuel filters go in tank instead of on frame?

03's have the fuel filter on the rail.