Hello,
My car is Trailblazer 2006 LS 4.2L standard. It accelerates from 0-80 km/h normally but while the fuel pedals are pressed between 80 - 100 km it suddenly changes the gear to lower one with engine whining and the speed is reduced to the lower one until I remove leg from fuel pedal then press again to return to the normal acceleration. The car is normal over 100 km/m but sometimes I can feel a little gear jerking while it's transmission. Note: There is no any electrical problem in the car when it was checked out by Tech2 machine.
I made engine service(new spark plugs,throttle body, oil and filter), and the transmission oil and filter are new also.
Thanks for your help in advance.
My car is Trailblazer 2006 LS 4.2L standard. It accelerates from 0-80 km/h normally but while the fuel pedals are pressed between 80 - 100 km it suddenly changes the gear to lower one with engine whining and the speed is reduced to the lower one until I remove leg from fuel pedal then press again to return to the normal acceleration. The car is normal over 100 km/m but sometimes I can feel a little gear jerking while it's transmission. Note: There is no any electrical problem in the car when it was checked out by Tech2 machine.
I made engine service(new spark plugs,throttle body, oil and filter), and the transmission oil and filter are new also.
Thanks for your help in advance.
