2002 Chevrolet Suburban "emissions" Questions

I have a emission control light on in my 07' suburban I had it checked at autozone and all thier computer said was emission control. any ideas When it says emission control, it's rather very broad

not passing emissions Having a hard time The NOx (Oxide of Nitrogen) level standard in the state of New Jersey is 1372. Anything higher than this number will fail emissions. --------------------------

...not , it should be replaced !!!!!!!!!!! together w/tuneup would be the best way to assure passing emissions

1992 suburban not passin emission testing hi i have a 1992 suburban and i had the emission testing done and it failed. they said all the tests passed except for the curb idle. can you please tell me ...

...4wd is not like an emission warning where it has to be checked to make sure it still passes emissions.You need to get the codes checked to see what could be causing the light to come on.Hope ...

evaporative emissions control system pressure sensor 99' suburban where is it? Hello, You have an emission sytem problem . The actual sensor is on top of the fuel tank that lets the system know how ...

...simple I have to do or do i have to take it to the dealer only, i need to get tags but cant pass emissions , the tech said to drive it for a week but is there any other way? and how may mile do i ...

fail emission high nox high nox emission what is the make ,model and year please EGR Valve is supposed to be there to keep NOX at acceptable levels So check that it is working correctly Rules for ...

...could be the problem Hi..my name is Keith..and if the Service Engine light comes on..you have an emissions problem..and if someone would retrieve the code number(s)..i can tell you what it is..or ...

Hello...I have a '95 GMC K2500 Suburban with a 5.7L that failed a recent emissions test. I replaced the spark plugs, removed and cleaned the EGR...cap, rotor wires look OK...truck re-tested worst ...