GMC ENGINE

Engine Backfires.

Pickup History: I Purchased At 115,000 Miles. Car Fax Report Shows Service From First Owner Up To 80,000 Miles. Nothing “reported” From...

Jimmy Was Running Fine Until I Turned A Corner, Then It Stated Running Like It Was Hitting On Only 3 Cyls, Shaking A Lot, Running Rough...

I Have An 89 Sierra 1500-350 Engine- What Can I Do To Get The Best Possible Fuel Mileage Out Of My Truck-

I Have A 2002 Gmc Sierra, With A 5.3 V-8. In Cold Temperature, When I First Start My Truck, It Immediately Idles Up To 2300 Rpm For About...

My Vehicle Suddenly Quit, Then Ran Again After Sitting A Few Hours. It Has Become Unreliable, And Will Starve And Die. This Usually...

1988 Gmc Jimmy 4x4 At Start Up Idle Races, Then When Engine Should Be Warm Enough It Comes Down But Not A Lot. Does Anyone Know If...

I Have A 1997 Gmc Sierra With 194,000 Miles On It How Do You Know If The O2 Sensors Are Going Bad

I Have An 89 Gmc C1500 With A 305. When I Bought It The Guy Said It Had Been Sitting For 2 Years. So I Had To Take The Heads And Intake...

I Have A 1988 Gmc Sierra. It Has Been Hard To Start After Sitting For A While, This Started Happening About 2 Months Ago. No Big Deal. But...