GMC Jimmy P Codes (Powertrain) P0300 - P0399

I Have Replace The Motor In My Jimmy . I Keep Getting The Po300 Code I Change Every Thing Plugs,cap ,rotor,wires,fule Fileter,even The...

I Have A 2001 Gmc Jimmy 4x4 (t15) With A 4.3l V6 Auto 149,000 Miles. Just Replaced The Lower Intake Manifold Gasket The Other Week, So Had...

I Put On New Plugs, Wires, Cap And Rotor,and Still Runs Rough And Showing Same Code, What Else Could It Be?

My 1999 Jimmy Is Giving A Po 300 Code It Runs Very Rough. Has New Cap And Rotor, The Plugs And Wires Are Less Than A Year Old. Used A Cigar...

Car Starts Fine. When Accelerating When Cold, Engine Chugs. Rpm's Fluctuate While Driving From A Stop And At Cruising Speeds Even With...

Hello, I Have A 1998 Gmc Jimmy 4.3l. I Just Recently Did A Tunup Which Includes All 6 Sparkplugs, 6 Wires + 1 Coil Wire, Distributor Cap...

I’ve Got The P0300 Trouble Code For Multiple Cylinder Misfire. I’ve Got Rough Idles, Misfires, Backfiring Especially While Driving...

The Vehicle Listed Above Is Throwing The Code P0300. Spark Plugs, Sparkplug Wires, Ignition Coil, Icm, Mass Air Flow Sensor, Distributer Cap...

96 Jimmy 4.3 4x4 144k Miles, I Rebuilt The Upper End Both Heads Machined A 1000 Miles Ago, Bought Ebay Used Injector Spider Was Clean And...