NHTSA Complaint #10532557 — 2007 GMC YUKON DENALI

IT BEGAN W/A HARSH SHIFT FROM 2ND TO 3RD. IT STARTED HAPPENING MORE OFTEN, MY ENGINE LIGHT CAME ON& IT BEGAN SHIFTING SO HARSH IT WOULD JERK YOU. WENT TO MY GM DEALER & THE CODE WAS FOR A THROTTLE BODY SENSOR. THEY REPLACED THE SENSORS & ALSO FOUND A CRACKED MOTOR MOUNT. THEY ADVISED THE CRACK WAS PROBABLY DUE TO THE TRANSMISSION SHIFTING SO HARSH, ALSO THE SHIFTING PROBLEM WAS PROBABLY DUE TO THE SENSOR MALFUNCTION AND THE LACK OF COMMUNICATION FROM THE THROTTLE TO THE TRANSMISSION. THEY REPLACED THE MOUNT & SENSORS. CHARGED ME $700. LEFT THE DEALERSHIP, 15 MINS LATER THE ENGINE LIGHT CAME ON! I TOOK IT STRAIGHT BACK AND DAYS LATER THEY CALLED...COULDN'T FIND ANYTHING WRONG, THE CODE AGAIN WAS FOR THE SENSORS, THEY INSTALLED AGAIN & CHECKED THE SOLENOIDS BUT THEY WERE FINE. THEY ADVISED A NEW TRANSMISSION WAS NEEDED & WOULD BE $2400. WITH NO WARRANTY, I COULDN'T AFFORD THE REPAIR, SO I HAVE BEEN DRIVING IT UNTIL I CAME UP $$. IT STILL SHIFTS HORRIBLE AND OFTEN 'REVS' WHILE ACCELERATING BUT WON'T SHIFT FROM 2ND-3RD. THE ENGINE LIGHT COMES ON, I HAVE TO PULL OVER, TURN IT OFF 20 MINS BEFORE IT WILL DRIVE. A DAY OR TWO LATER THE ENGINE LIGHT WILL GO OFF, BUT WILL RANDOMLY APPEAR AGAIN WHEN THE 'NO GO' HAPPENS AGAIN. AFTER 'GOOGLING' THE SYMPTOMS, THERE'S SEVERAL FORUMS STATING THE EXACT SAME ISSUES! I'M AFRAID THIS WILL HAPPEN WHILE MERGING ON THE HWY OR AT AN INTERSECTION. THIS IS THE MOST EXPENSIVE CAR I'VE OWNED & I'M IN SHOCK A VEHICLE THAT COST ME 50K WOULD END UP THE WORST CAR I'VE OWNED. THE TRANSMISSION IS THE ONLY SAFETY ISSUE I HAVE, BUT SINCE I'VE HAD THE CAR, I'VE REPLACED 3 DOOR HANDLES, IT SHAKES AROUND 60MPH, THE BACK PASSENGER DOOR WON'T OPEN FROM THE OUTSIDE & THE LOCKS INTERMITTENTLY WORK, BOTH CAPS ON THE AUX OUTLETS CAME OFF AFTER 6 MOS ALONG W/ THE PAINT ON THE A/C CONTROLS. COMPLETELY DISAPPOINTED IN GM! *TR