2009 GMC Yukon Denali Xl

I WAS DRIVING ON THE HIGHWAY AND ALL OF A SUDDEN A MESSAGE ON THE DASHBOARD SAID ''ENGINE POWER IS REDUCED" AND MY ENGINE SHUT OFF, BRAKES WERE HARDLY WORKING AND I COULD HARDLY STEER OR TURN THE WHEELS. MY CAR COPMLETLY LOST CONTROL AND I WAS LUCKY THERE WERE NO CARS BY ME OTHERWISE AN ACCIDENT WOULD HAVE BEEN INEVITABLE. WHEN I WENT TO THE DEALER THEY TOLD ME THEY HAVE NO ANSWER AND THEY SUGGESTED TO REPLACE MY IGNITION SWITCH AND CAMSHAFT SENSOR TO BEGIN WITH. NO GUARANTY THAT IT'LL FIX MY PROBLEM THEY SAID. READING ONLINE FORUMS LOOKS LIKE I AM NOT THE ONLY ONE. PLEASE DO SOMETHING ABOUT IT OTHERWISE SOONER OR LATER LIFES WILL BE LOST.

DRIVING AT ROUGHLY 50 MPH. WENT TO PASS CAR ON TWO LANE HIGHWAY. ACCELERATOR STUCK TO FLOOR (NOT STUCK ON FLOOR MAT OR OTHER OBJECT). VEHICLE ACCELERATED TO 95 MPH, SLOWED TO 70 WITH BRAKE DEPRESSED FULLY. SLOWED TO 50 WITH BRAKE AND EMERGENCY BRAKE DEPRESSED. ACCELERATED WHEN DOWNSHIFTED INTO MANUAL. FINALLY PUT IN NEUTRAL AND WAS ABLE TO STOP. HAD COMPLAINED OF ROUGH IDLE, STALLING AND REDUCED POWER FOR 3 YEARS (SINCE WE HAD CAR FOR ONLY A FEW MONTHS). SEE SOME DISCUSSION THAT A DIRTY THROTTLE BODY COULD LEAD TO ALL OF THESE PROBLEMS. 3 YEARS WITH 3 DIFFERENT GM SERVICE SHOPS AND NO SOLUTION. FORTUNATELY THE ROAD WAS NOT CROWDED AND WAS STRAIGHT. OBVIOUSLY, THIS COULD HAVE BEEN A FATAL PROBLEM FOR US. IT WAS MY WIFE, MYSELF, AND OUR THREE CHILDREN UNDER 4 YEARS OF AGE IN THE VEHICLE. *TR