i have a 2003 cts car will run sometimes then sometimes it wont like its not getting gas. checked fuel pump, fuel pump relays and all is good. need some advice. thanks.

 

need details...

explain "will run sometimes then sometimes it wont"
it stalls? it wont start?

did you change the fuel filter?
how did you check the fuel pump?
did you check the fuel PRESSURE at the manifold?
did you check the e-juice at the plugs?

in dry weather? rainy days? fog/humid weather?

any codes?

 

changed fuel filter pulled the pump out and ran power to it to see if would turn on. it happens no matter what conditions its in. it will run for any where from 5-20 minutes then stall out then will not start up until about 30 minutes to 1 hour.