NHTSA Complaint #10269455 — 2007 CHEVROLET TRAILBLAZER

I HAVE A PROBLEM WHERE THE THROTTLE HANGS UP AROUND 2000 RPM IN ALL GEARS AFTER BEING ON THE THROTTLE AND THEN IMMEDIATELY NEEDING TO SLOW DOWN FOR ANY REASON. THIS IS A TRAILBLAZER SUPER SPORT EQUIPPED WITH THE 395 HP 400 FT LB ENGINE. I HAVE BEEN TO THE DEALER. I HAVE SUED GM FOR THIS BEING A LEMON AND WAS PAID OFF. YET NO FIX. I HAVE VIDEO OF THIS HAPPENING. OTHER OWNERS HAVE THE SAME PROBLEM AND GM SAYS BECAUSE OTHERS DO IT THE VEHICLE IS ACTING AS DESIGNED. PER GEORGE VALEZ GM LEGAL OFFICE . GM SERVICE REQUEST # 71-661522934 "HIGH IDLE" I HAVE LOGS WHERE THE ACCELERATION TAKES PLACE FROM 9 MPH TO 11 MPH FOR 11 SECONDS OF A TBSS WILD RIDE WITH NO THROTTLE. I START BY DOWNSHIFTING IT IN MANUAL 1ST WHILE SLOWING DOWN. (BRAKES REQUIRED TO SLOW FROM 2K HANG UP RPM ON DOWN.) WHEN THE ENGINE IS SLOWING DOWN THERE IS A BUMP AT ~2000 RPM WHERE THE ENGINE SPEED RAISES ABOVE THE INPUT SHAFT SPEED OF THE TRANSMISSION. PRIOR TO THIS IT WAS TURNING SLOWER AND COMPRESSION BRAKING. TIME HERE IS 0 OF THE 11 SECONDS. I HIT THE BRAKES AT 14 MPH TO PULL THE SPEED DOWN FROM 2K RPM AND LET OFF AT 9MPH 3 SECONDS LATER. STARTING AT 1381 RPM FOR THE LOWEST ENGINE RPM, TRANS INPUT SHAFT 50 RPM SLOWER THEN THE ENGINE INDICATING ACCELERATION. AC CLUTCH JUST HAPPENS TO KICK IN HERE. "HERE WE GO!" I SAY. THE NEXT 8 SECONDS WE HAVE THE ENGINE HITS 1650 RPM AND HUNTS AROUND THIS RPM +- 75 RPM WHILE WE HIT 11 MPH. AT 8.4 SECONDS THE ENGINE CUTS BACK TO 1468 RPM. THIS IS WHEN THE TRANS INPUT SPEED IS FASTER THAN THE ENGINE RPM BY AROUND 50 - 70 RPM, THIS INDICATES ENGINE FINALLY SLOWING THE VEHICLE AGAIN. IT ONLY TAKES 5 SECONDS FROM THIS POINT TO SLOW DOWN FROM 11 MPH TO 5MPH WITHOUT ANY BRAKES. THAT IS WHAT IS SCARY - 16 SECONDS OF FIGHTING THE ENGINE WHEN IT COULD HAVE STAYED CUT OUT AND SLOWED DOWN IN LESS THAN 5 SECONDS FROM 2K RPM. THE AC IN THIS EXAMPLE MAKES THE PROBLEM WORSE, BUT ISN'T 100% OF THE PROBLEM. *TR UPDATED IVOQ/ 09/10/09