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Truck Repair/engine trouble codes


engine light has been on for two weeks.2006 chevy silverado. had it diagnosed.with trouble codes P-0449 and P-0455....can not find the answers on line!!! they say it has something to do with emmisions....could you help??

i don't know anything about pickups but i did a search for you and here is what i found.
for p-0449 code check this link
and for p-o455 check this link

perhaps those links can help you out. sorry couldn't help i work on semi trucks.

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Jeff Drumm


I Can answer any question pertaining to semi trucks and trailers. Have no experience in the automotive field so not able to help in that area.


My experiences in Semi Trucks is. I own my own truck and i presntly maintain a 80 truck fleet. Can handle any questions pertaining to a truck have tore apart and rebuilt every aspect on them. Fleet I deal with is Mainly Volvo trucks and a handful of freightliners. Work on automated transmissions on a daily basis along with carrier apu's. With engines my specialty is the 60 series Detroit but do work on the cummins isx the n-14 and the ism. and also the Volvo engines.

Have a College Degree from university of northwestern ohio in diesel and agriculture mechanics. Have 10 years behind the wheel driving a truck and 4 years working on trucks full time. Also have grown up on a farm so have been tinkering on trucks and tractors all my life.

Awards and Honors
I've gone through online schooling and have received certificates from webb wheel, Timken and Volvo academy.

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