GMC ENGINE SYMPTOM

The Motor, After Driving A While, Throtles Up An Down At 1500 Rpm/55mph? It Has Been In 3 Different Shops For About A Month And No One Can...

Let Me Preface My Problem With. I Had Been Driving My Van Throughout The Day With No Cranking, Starting, Or Running Issues. Both The...

I Recently Purchased A 2000 Gmc Sierra 1500 Extended Cab 4x4 With 136,000 Miles And An Automatic Transmission. It Has The 4.8 Liter Engine...

I Have A 2000 Gmc Sierra I Was Driving Today And It Just Shut Off. And Now It Will Not Start Any Idea What Would Cause This Problem? It Will...

Starting Problems/doesn't Stay Running. Some Days Will Start Run For 4-5 Mins Then Shut Itself Off Cannot Drive. New Parts By Self Or...

When The Outside Temperature Is About 40f Degrees Or Below, My Engine Idles Really Rough Until It Is Warm. It Recently Started Coding P0300...

350tbi Reman Motor. W/20k Mil. Heads On The Reman Motor Were Junk Went Bad After Only 20k. They Were Replaced W/ Edelbrock Performer Heads#...

Replaced Fuel Pump, 130k 5.3l 2wd, Opinions Have Led Me To A Possible O2 Sensor Failure? Idles Rough If It Does Start And The Only Way I...

I Have A 1999 Jimmy And Have Taken Good Care Of It. 137,000. Miles. It Cut Off While Driving, No Fuel Pressure So I Replaced The Fuel Pump...

This Problem Has Been Intractable. Or Maybe It's More Than One Problem. Since Purchasing The Truck 10 Years Ago It Has Had A High Idle....