NHTSA Complaint #11194098 — 2009 GMC ACADIA

P0017 AND P0008 ERROR CODES: MY WIFE LOVES HER ACADIA! DEALERSHIP HAS DONE RECALLS, REPLACED RACK AND PINION AND PS PUMP. I AM CLOSE TO POSITIVE THAT ECM HAS BEEN MODIFIED TO SHORTEN OIL CHANGE, TO NOT DEFINE A CHAIN POTENTIAL FAILURE THAT SENDS AN ERROR CODE, AND UPDATE SOFTWARE TO ALLOW FOR MORE "SLOP" IN CLEARANCE SPECS SO THAT CHAIN ISSUES ARE CONCEALED UNTIL A CRITICAL FAILURE OF EQUIPMENT. AT 121K I DROPPED CRADLE DOWN TO REPAIR/REPLACE WAVE PLATE. PLATE WAS GOOD AS NEW. MUST HAVE GOTTEN A "GOOD" PLATE. NOW AT ABOUT 140K I HAVE THE P0017 AND P0008 CODES. ENGINE NOT RESPONDING ACCELERATOR WISE AS BEFORE. I AM GOING BACK TO DEALER AND ASK TO SEE SERVICE RECORD OF WHAT WAS DONE TO ENGINE. I KNOW I WILL JUST BE WASTING MY TIME. TO COVER UP A PROBLEM BY MESSING WITH PARAMETERS ON AN ENGINE TO FOOL A CUSTOMER IS CLOSE TO BEING DISHONEST, AND THAT IS WHAT'S HAPPENING WITH THE CHAINS. IF ALL ELSE FAILS AT THE DEALERSHIP, AND THEY SEND ME AWAY, I WILL PARK THE ACADIA IN THE GARAGE AND DO MY BEST TO REPLACE THE CHAINS AND GEARS WITH THE ENGINE IN VEHICLE. I HAVE NO WAY TO DROP THE ENGINE OUT. I CAN'T AFFORD $4000 FOR THE DEALERSHIP TO DO IT. GM, I HAVE ALWAYS BEEN A LOYAL FAN ON YOUR VEHICLES, AND HAVE ONLY OWNED CHEVY'S AND GMC'S SINCE 1965, NEVER OWNED ANY OTHER BRAND, EXCEPT A 1947 JEEP UNIVERSAL THAT I PUT A SMALL BLOCK IN, BUT THIS ACADIA TRANSMISSION/ENGINE ISSUE MIGHT JUST TEST OUR RELATIONSHIP IN THE FUTURE. WHAT I HAVE READ ON SOCIAL MEDIA, THESE CODES ARE POPPING UP ALL OVER THE PLACE, AND GM IS NOT CARING, EVEN THO THEY NOW HAVE A 10 YR/120,000 COVERAGE. I AM BEGINNING TO THINK THAT THIS ISSUE WILL NEVER BE RESOLVED IN FAVOR OF THE CUSTOMER. DESIGN PROBLEM AND POOR BACK VALVE COVER VENTING. GM, YOU CAN DO THE RIGHT THING HERE.