2017 GMC YUKON DENALI Fuelpropulsion System Problems

PURCHASED A USED 2017 GMC YUKON DENALI WITH ALMOST 36,000 MILES. 4 DAYS AFTER THE PURCHASE MY ENGINE LIGHT CAME ON. NEXT MORNING THE VEHICLE WAS NOT DRIVING RIGHT, VERY SLOW MOVING (COULDN'T GO FASTER THAN 45 MILES PER HOUR), VERY SHAKY, LOUD, FELT LIKE IT WAS EITHER GOING TO DIE ON ME OR BLOW UP. HAD ONSTAR CHECK IT OUT WITH SEVERAL ISSUES REPORTED, TOOK TO DEALERSHIP RIGHT AWAY. 3 FUEL INJECTORS WERE FAILING AND WERE REPLACED STILL UNDER WARRANTY. FUEL INJECTOR #3 WAS REPLACED PRIOR TO MY PURCHASE OF THIS VEHICLE AND NOW AGAIN REPLACED ALONG WITH INJECTOR #5 & #8. 2 WEEKS LATER ENGINE LIGHT CAME ON AGAIN. DROVE OK, TOOK TO DEALERSHIP, FUEL INJECTOR #1 NOW GOING OUT. PARTS ON BACK ORDER....GOT A CALL THIS MORNING THAT PARTS ARE IN (HAD TO WAIT OVER A WEEK). I AM NOW OVER THE 36,000 MILES AND WILL THEREFORE...