GMC Yukon Engine Runs Rough

The Vehicle Listed Above Is An Xl Model. It Runs Rough When Cold Like It Has A Bad Misfire Smooths Out When Warmed Up And Engine Pulls Down...

I Was Told Several Different Things Could Be Wrong With My Truck , The Engine Is Running Hard And It's A Tapping Soung When You Start It Up...

After The Car Sits For Any Length Of Time And Is Started Up, The Engine Runs Smoothly. When Placed In Drive, And With Moderate Acceleration...

Had Replaced Back 3 Exhaust Manifold Bolts(2 Drivers Side,1 Passanger Side)at A Repair Shop.now It Runs Really Rough And Has No Power.engine...

My Gmc Yukon Runs Rough At Low Rpm Such As When I Come To A Stop. Engine Rpm Drops To Around 400-500. Engine Shakes As If Miss Firing Or...

Seems To Be Worse Under One-fourth Tank. Black Smoke When Accelerating. Black Carbon With Moisture Coming Out Of Tailpipe.

My Yukon Idles/runs Rough When I Initially Start (cold), After It Warms Up It Runs Great. Shaky And Rough Running Is Only For A Few Minutes...

There Are Times When It Sounds And Acts Like It Is Going To Die. The Rpm's Drop Off And Then Come Back Up To Normal Operating Range....

As It Is Warming Up It Runs More And More Poorly. The Speedometer Starts Jumping Around, It Will Downshift Repeatedly And Even Disengage And...

My 2000 Yukon Xl With 5.3 Runs Rough When First Starting In Morning. Clears Up When Warm. I've Had New Plugs, Wires, And Injection Service...