NHTSA Complaint #10251537 — 2008 GMC ACADIA

TO STATE RECOGNITION OF THE FACTS: FWD WHEEL-SPIN WAS REPORTED TO ACHIEVE FORWARD VEHICLE MOVEMENT WITH THE CURRENT FWD SYSTEM ON WET SURFACES OF THIS VEHICLE. THE DRIVERS CORRECTION FACTORS TO REGAIN TRACTION INCLUDES, DE-THROTTLE (BACK PEDDLE THE ENGINE) TO LOWER THE TORQUE LEVEL AND THEREBY HOPEFULLY REGAIN TRACTION WITH THE ROADBED WHEN THE ROAD CONDITIONS EXIST AS REPORTED. REPORTED DETAILS TO GM AND DRIVING EXPERIENCES DRIVING ISSUES INCLUDE: 1.CANA TRACTION CONTROL DEVICE BE ADDED TO RETARD THE THROTTLE AND RPM TO PREVENT WHEEL-SPIN? 2.ARE THE CORRECT TIRES / TIRE COMPOUNDS BEING USED? 3.WILL WHEEL-SPIN ENDANGER THE LIFELINE AND LONGEVITY OF THIS TRANSMISSION OR MOTOR? 4.IS DAMAGE IS BEING INTRODUCED INTO THE MECHANICAL PARTS OF THE ENGINE AND TRANSMISSION, WHAT CAN WE EXPECT? 5.THE CURRENT IMPLEMENTATIONS REQUIRE THE DRIVER TO FUNCTIONALITY DRIVE REGAINING CONTROL OF THE FRONT TIRES, WHICH IS CONSIDERED ABNORMAL THEREFORE BECOMING A HAZARD TO THE NORMAL TRAFFIC FLOW AS SHOW. 6.THE CURRENT IMPLEMENTATIONS REQUIRE THE DRIVER TO BACK-PEDAL THE THROTTLE MOTOR AND TRANSMISSION; THE OBSERVED CONDITIONS OCCUR OVER 2000 RPM OF ACCELERATION, NEXT THE MOTOR / FWD SYSTEMS THEN OVER-SPIN THE MOTOR AND TRANSMISSION UP TO 3500 RPM BEFORE THE DRIVER CAN BACK-PEDAL THE THROTTLE, REGAIN CONTROL, AND RESUME ACCELERATION WHILE ATTEMPTING TO REMAIN SAFE IN NORMAL TRAFFIC FLOW.. TO SUMMARIZE GM (KAREN) HAS REPORTED IN A VERBAL PHONE CONVERSATION WITH ME, HELD ON 12/10/08 THAT A STABILOCK TRANSMISSION ON A 2008 ACADIA IS WITHIN SPECIFICATIONS TO HAVE FWD TIRE-SPIN AND OR TRACTION LOSS WHEN ACCELERATION EXCEEDS 2000 RPM ON WET ROADS AND SURFACES AND THE VEHICLE HANDLING CONDITIONS ARE NORMAL. KAREN ALSO STATES SHE HAS NO ISSUES WITH THE REPORTED PROBLEMS AS DESCRIBED, AND MAYBE, I (THE DRIVER LACKS EXPERIENCE DRIVING A FRONT WHEEL DRIVE VEHICLE). *TR