SOON AFTER BUYING MY 2011 GMC TERRAIN, 4 CYL, A RATTLE DEVELOPED IN ENGINE ON START UP. AFTER MONTHS OF RETURNING TO DEALER, THEY SAID A TECH BULLETIN NOW EXISTED AND FIXED PROBLEM. PROBLEM WAS SOLVED, A MONTH OR SO LATER, PROBLEM RETURNED. I RETURNED TO DEALER AND THEY SAID NOTHING THEY COULD DO. AT THE SAME TIME I WAS COMPLAINING ABOUT GAS MILEAGE, 20 MPG ON HIGHWAY, 17 CITY. I CALLED GM CUSTOMER SATISFACTION DETROIT, AND HAD MANY DISCUSSIONS WITH THEM. FINALLY TOLD ME DON'T BOTHER US ANY MORE ABOUT TWO PROBLEMS, AND TO THIS POINT NO RESOLUTION TO EITHER PROBLEM. *JS
2013
TIRES
A SECOND MICHELIN LATITUDE TOUR TIRE ON 2013 GMC TERRAIN (PURCHASED NEW IN MAY 2013) HAD REPETITIVE LOW TIRE PRESSURE SHOWING ON THE TPMS. AFTER 1 WEEK OF INFLATING TO SPEC PRESSURE AND ONLY HAVE IT HAPPEN AGAIN, REMOVED THE WHEEL AND TIRE TO INSPECT FOR AN EMBEDDED OBJECT (E.G. NAIL) IN THE ENTIRE TREAD AREA AND SIDEWALL. NOTHING VISIBLE. REPLACED AND INFLATED TO SPEC AGAIN. 2 DAYS LATER LOW PRESSURE AGAIN. REMOVED THE WHEEL/TIRE FROM THE VEHICLE AGAIN AND MIXED A SOAP SOLUTION TO INSPECT THE TREAD AREA FOR A LEAK. AFTER THOROUGHLY INSPECTING THE ENTIRE TREAD AREA TWICE, NOTICED A SLOW LEAK BUBBLING ON THE SIDEWALL AT THE TREAD-SIDEWALL INTERFACE (TIRE MOLD SEAM?). PROBED THE LEAK SITE FOR EMBEDDED GLASS OR OBJECT AND FOUND NOTHING REPRESENTATIVE OF A ROAD HAZARD EVENT EXCEPT THE AIR LEAK IN THE SIDEWALL. PLUGGED THE LEAK WITH A TIRE PLUG TO SHOW LOCATION AND TOOK IT TO THE DEALER. A TIRE WITH LEAK IN THE SIDEWALL EVEN PLUGGED IS TOO DANGEROUS TO DRIVE ON. I AM WAITING FOR A NEW TIRE. *TR
