NHTSA Complaint #729507 — 1999 GMC SIERRA

TO THOSE THAT COULD HELP ME GET GMC OR RANDY REED GMC PONTIAC IN KANSAS CITY, MO TO FIX THIS VIBRATION.I HAVE HAD THIS VIBRATION IN THE TRUCK SINCE I DROVE IT OFF THE LOT WHEN IT WAS BRAND NEW AT 6 MILES WITH A DELIVER MILES OF 23. I HAVE TAKEN IT BACK TO THE DEALER 13 TIMES IN THE LAST 14 MONTHS AND 8 OUT OF THOSE 13 TIMES IT WAS FOR THE VIBRATION. THE DEALER HAD PUT ALL NEW TIRES ON THE TRUCK AFTER ABOUT 3,000 MILES BUT STILL COULD NOT GET THE VIBRATION ALL THE WAY OUT. IT WAS TO A POINT WHERE I COULD STAND IT BUT I WAS NOT HAPPY WITH IT. THE VIBRATION COMES ON BETWEEN 65 TO 70 MPH WHICH INDICATES THE TIRES. THE TIRES ARE GOODYEAR WRANGLER ST P235/75R16 OWL WHICH IS THE ORIGINAL OEM TIRE FOR THAT TRUCK ON THAT YEAR. DURING THE TESTING AROUND THE TIME OF EXCHANGING OF ALL THE GOODYEAR WRANGLER ST FOR EXACT SAME THING WE PUT A SET OF FIRESTONE WRANGLER HT I BELIEVE ON IT AND IT RODE PERFECTLY SMOOTH. ON 08/15/2000 I TOOK MY TRUCK IN FOR A BULLETIN THE SERVICE MANAGER WANTED TO DO TO IT TO STRENGTHEN THE FRONT END ON IT AND I GOT IT BACK TWO DAYS LATER AND IT RIDES ROUGHER THAN BEFORE. I TOOK IT BACK ON 08/29/2000 AND THE NEW SERVICE MANAGER GOT INVOLVED AND SAID HE COULDNT FEEL ANYTHING ON VIBRATION SO I TOOK HIM FOR A RIDE AND WHEN YOU GO UP OR DOWN A HILL WITH THE CRUISE CONTROL ON AT 65 OR 67 MPH YOU FEEL THE VIBRATION IN THE FLOOR SEAT AND STEERING WHEEL ALSO THE MIRRORS VIBRATE SOMETIMES WHERE YOU CAN NOT MAKE OUT THE VEHICLE LIGHTS BEHIND YOU. THEN THE SERVICE MANAGER SAID IT STILL RIDES SMOOTHER THAN MY NEW DEMO WITH LESS THAN 600 MILES ON IT. I BELIEVE HE HAS THOSE FIRESTONE WRANGLER SOMETHING ON THE DEMO. I ALSO TALKED TO GMC A FEW TIMES AND THEY ARE TO THE POINT THERE IS NOTHING THEY WILL DO.I LIKE THE TRUCK BUT HATE THE VIBRATION AND IT IS VERY FRUSTRATING ON TRIPS.THE TRANSMISSION ALSO DOWNSHIFTS WHEN YOU GO OVER A HILL WITH IT SET ON 60MPH AND AIR CONDITIONING RUNNING.THEY WOULDN'T EVEN LIST THIS COMPLAINT WHEN I TOLD THEM ABOUT IT.