CHEVROLET SILVERADO EMISSION

Wont Pass Smog Code P0430. I Found A Vac Hose That Was Not Connected To Anything But Dont Know Where It Goes Because Part Of It Is Missing....

So I've Got A New Motor In My Truck. Its A 1992 Silverado Z71 350 Bored 40 Over. Fuel Injection (throttle Body) 5 Speed Manual Trans ...

Supposing 1 Of 3 Previous Owners Changed The Ecm But Got The Wrong Chip (say Out Of A Junkyard 7.4l) Now Causing Excess Fuel Injection...

New Exhaust Pipes, New Catalytic Converters(2) Went To Inspection For Emissions Test. Failed Hydrocarbons And Canon Monoxides. Mechanic...

91 C1500 2 Wheel Drive 350 Mileage 215535 Need To Find Out Which Orifice Washer To Use When You Don't Have The O.E. Part Number To Go By...

I Have To Hold Down The Gas To Get It To Restart, An Some Times A Few Times To Restart, Its Like A Vacumee Leak. But I Checked, I Found 2...

Hi On My Truck Listed Above K1500, I Was Having A Ticking Noise. My Friend Is A Mechanic He Pulled The Valve Covers Off On The Passenger...

Hi. I Keep Getting Codes P0171 And P0174. I Have A 99 Chevy Silverado 5.3l. I Already Cleaned Maf Sensor And Replaced Air And Fuel Filter...

When Im Driving Down The Road Or When Its Parked It Will Fire Up Then After A While It Will Just Shut Off It Wont Sputter Or Nothing As If...

I Would Like To Install Headers On The Truck. Can I Delete The Cat Converter, I Live In Montana There Are No Emissions Tests.