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Just Tuned It Up 5k Ago.eplaced All Ignition Wear Parts.

P300 Multiple Random Misfire

Hey Guys, Recently My 1999 Yukon 5.7L 4wd(102,000 miles), Started Intermittently Hesitating While At Light Throttle Or Shifting Between 1-2 And 2-3. It Only Does It Intermittently, And Does Not Matter If It Is Warm Or Cold. If You Floor It, It Comes Out Of It And Runs Good. But Then Goes...