NHTSA Complaint #10531892 — 2007 GMC YUKON DENALI XL

I WAS DRIVING MY DENALI IN THE CITY THE FIRST TIME IT HAPPENED. THE TRUCK DROPPED IN SPEED AND LOST POWER. I NOTICED THAT THE CLUSTER OF LIGHTS IN MY DASH WENT OUT AND THE VEHICLE STRUGGLED TO MAINTAIN SPEED. A LITTLE BIT DOWN THE ROAD I PULLED OVER. I DIDN'T KNOW WHAT HAPPENED OR WHAT TO DO. IT WOULDN'T SHIFT GEARS. I TRIED TO DRIVE IT TO A MECHANIC THAT WAS CLOSE BECAUSE I HAD NO HELP AVAILABLE. IT STRUGGLED TO MOVE SO I PULLED OVER AGAIN. I SAT ON THE SIDE OF THE ROAD NOT KNOWING WHAT TO DO SO I TURNED IT OFF. AFTER SITTING FOR 10-15 MINUTES I STARTED IT. THE CHECK ENGINE LIGHT WAS STILL ON BUT THE DASH WAS BACK TO NORMAL. I BEGAN TO DRIVE IT TO SEE IF WAS OK. IT SEEMED TO BE AT THE MOMENT WITH THE EXCEPTION OF A HOT TRANSMISSION ACCORDING TO THE WARNING LIGHTS. THIS WAS THE 1ST OF MANY TIMES THIS WOULD HAPPEN. SOMETIMES IN THE CITY IN THE MIDDLE OF TRAFFIC WHERE I COULDN'T PULL OVER AND SOMETIMES GOING 70MPH ON THE TOLL ROAD. EACH TIME THERE WAS A TERRIBLE DRAG IN THE ENGINE AND I WOULD LOOSE POWER. OFTEN IT WOULD JERK THE WHOLE VEHICLE AS IF I SLAMMED ON THE BRAKES. THIS IS DANGEROUS FRUSTRATING AND SCARY. I LIVE IN A CLIMATE WITH LOTS OF SNOW & ICE THEREFORE THIS IS EVEN MORE OF AN ISSUE BECAUSE IT CAUSES ME TO LOOSE CONTROL SOMETIMES. THIS IS UNACCEPTABLE AND DANGEROUS!!!!! *TR