[charlie111]

my 04 lb7 crew cab dually with the edge and cat back exhaust ,i gutted the cat and some times my ses light comes on lately more often .is there a cure for this or just deal with it ? this happens with or with out the edge being on, oh yeah ive got a afe filter and yes i clean the mass air ,thanks too this site ! thanks see ya charlie m

 

[WanaDmxsub]

What code is it setting?
I have a catless '04 LB7 and have never set a code. (related to the exhaust that is)

 

[charlie111]

idont kknow what code it seems as if when i coast down a hill .i would guess its back pressure related ? charlie m

 

[WanaDmxsub]

Take it into an auto parts store and ask them to read the code/s for you. Copy down the #'s (P1043 as an example) and post them.
Or you could let us know where you are and maybe a local member with a reader will help out.
Are you sure that it's an LB7? They also made LLY's that year. (Just making sure)

 

[charlie111]

its definetly a 1st generation motor ,ill get the codes im tight with the dealer. im in mahopac ny thanks for the help guys