obd2 code 2539

I think you need to read those codes...P codes don't run over the 1800 range...

[quote:4eee99b87c="cww12"]i
own a 2004 gmc 1500 sierra v6 with 127000 miles . i recently repaired/changed right/rear o2censor .i also changed plugs/wires/air filter/gas filter. after about 200 miles check engin light comes on , i did scan and pulled a p2539 code /where do i go from here ?[/quote:4eee99b87c]my scanner does read p2539 , apparently it is a gm generic code that has something to do with fuel pressure. but i don't know if it is fuel tank pressure or fuel injector pressure or whatever and this is where im stuck. i hope its something like a gas cap