GMC SIERRA ENGINE SYMPTOM

Every Now Then While I'm Driving The Power Locks Will Start Clicking Really Fast And All My Dash Lights Will Spaz Out And So Does My...

I Have A 1500hd W/ 6.0l. What Would Cause My Mileage To Drop To 8.5-9 Mpg From 10.5-11? I Changed The Plugs, And Went To Synthetic Oil...

Codes 24 And 42

Truck Starts Fine When Cold, Difficult Starting After It Is Turned Off After It Is Warmed Up. 1999 Gmc Sierra 4.8l Engine. Bought The Truck...

I Can't Figure Out Why. I Have Replaced The Thermostat, Water Pump, And Hoses. I Tore Down The Motor And Flushed It Out I Have Also...

I Was Driving My Truck At About 55 Mph. Truck Had A Hesitation Like A Plug Wire Was Pulled, Then Started Running With A Bad Miss Like One...

Engine Starts Fine Hot Or Cold. When Engine Is Not At Full Opperating Temp Runs Fine. No Miss Or Stumble. When Engine Has Reached Opperating...

The Engine Runs Rough At Low Rpm Say Up To Around 2000. Then It Smooths Out Somewhat. The Fuel Pump Makes A Higher Pitched Whine Than The...

Cranks Good But Will Not Fire Drove Home From Work Shut It Off Next Day Would Not Fire Its Getting Spark And Gas No Check Lights

Disel Fuel Add To A Unlead Tank White Smoke From Exuste