GMC EMISSION

1995 Gmc Jimmy 6 Cyl 124000 Miles Why Is There Antifreeze In The Egr Valve? I Was Told That The Head Gasket Is Leaking. Could That Be...

I Am Getting A Check Engine Light On I Checked It With An Obd Device And It Said I Have A Large Leak In The Line. Do I Have To Replace The...

98 Jimmy, 4wd, Bucks And Jumps, Just Started Doing It, Not Gradual. Nothing Changed After Replacing Egr Valve. Any Other Ideas?

Evap Core- Replace It? How? Dash Must Come Up And Or Out? Can I Cut From The Outside For Evap Only Replacememt?

Does Anyone Know Where I Can Purchase An Egr Valve Block Off Plate For A 2001 Gmc Sonoma 2.2l. Thanks. Ron I Need The Plate To Block Off...

1992 Gmc Jimmy. I've Read That The Gmc Jimmy's Are Sort Of Prone To Getting Carbon Build-up In The Intake Manifold. Is There Any Kind Of...

Can You Direct Me To Or Provide The Diagrams I Need To Re Tube The Vacuum Correctly? Smog Test Tech Told Me I Was Missing Two Hoses For Smog...

Engine Performance Problem 1999 Gmc Jimmy 6 Cyl Four Wheel Drive Automatic I Need To Knoiw Exactly Where The Purge Valve Is Located On...

I Need To Know What Would Cause The Egr Valve Not To Work. The Vacuum Hoses Are All Fine, And It's Not The Actual Egr Valve That Is The...

Secondary Air Injection Pump Theres A Tube(fat, Black An Rubber) That Comes Out On The Passenger Side Is Disconnected An We Cant Figure Out...