Two problems related to speed sensor have been reported for the 2008 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Impala based on all problems reported for the 2008 Impala.
Vehicle hesitates throttle body causes car to jerk cut off not pick up speed always idled up speed sensor reads 107 mph when only going 30mph stalls. Almost was rear ended because car shut off in the middle of driving. I have my car regularly serviced and all of a sudden this started happening. My blendoor aculater cause my heat not to sometimes come on and it makes this loud clicking noise. Most if no all Impala have this problem and gm knows about all the things I told you about yet they dont wanna recall the vehicle.
Tl - the contact owns a 2008 Chevrolet Impala. The contact stated while traveling at any speed the sensor had illuminated for reduced power intermittently. The contact stated that the acceleration pedal had to be pressed as the speed had reduced without warning. The vehicle was taken to an authorized dealer who reset the code and the failure recurred. The vehicle was further diagnosed that the throttle body sensor needed to be replaced. The vehicle was to be repaired. The VIN was not available. The manufacturer was notified of the failure. The approximate failure mileage was 150,000. Dyd.