GMC EMISSION

I Installed A New Egr Valve And Check Engine Light Is Still On With Same Code P140c.

Just Want To Know An Egr Blanking Plate Cause Any Engine Damge As My Eger Is No Good At The Time Being And I Do Not. Have 500 Dollars Saved...

I Have A 2001 5.3l Z71 Sierra With 70,000 Miles. I Recently Took It For A Smog Inspection And It Failed Throwing The Code P0410. I Checked...

1994 Safari - New Cat Plugs Wires Cap Rotor Pcv Clean Oil Nox High Co High Hc Very Low Should Be 735 Is 145 New Cat Plugs Wires Cap Rotor...

Engine Performance Problem 1998 Gmc C1500 V8 Two Wheel Drive Automatic Were Is The Egr Valve Located. Could I See A Picture.

I Have A 1999 Gmc Jimmy, With 160,000 Original Miles, A Mix Between Highway And Residential Miles. It Currently Runs Fine And Has No...

I Have A Leak In The Trank Only When Its Runner Where The T-case Mounts To The Trany It Looks Like It Starts Around The Breather But The...

Chevy, El Camino, 1982,120,000, V8. What Are All Of The Smog Pieces That Are Needed

Okay, So I Have This 97 Gmc Jimmy Slt V6 Vortec. I Had The Engine Replaced 1,000 Miles Ago And I Just Had An Inspection Done (new York...

2003 Gmc Envoy - Replaced Gas Cap Without Results. Where Do I Start Looking For A Vacuum Leak? Check Engine Light Is On And The Meter Says...