Your car has a feature that causes the transmission to go into a 'partial neutral' when at a stop.
This is found in all the Cruze automatics.
The unit, re-engages when the brake pedal is released and has been described as a feeling like that of the car behind just bumped into your car.
If you are very light on the brake pedal while stopped, or, in a situation where you are creeping forward, stop, creep forward again, you will pick up on the re-engagement "bump" everytime you creep forward.
Sometimes, the trans will re-engage (once) after a stop for no reason......that is OK.
There have been situations, though, where the unit will re-engage/dis-engage while holding the brake.......this occurs at 2 to 5 second intervals.
This would be abnormal and there is a fix that requires the transmission to be removed/disassembled, and steel and friction clutch disc replacement is called for.
If you have the continual bumping I just described, take it to your dealer and demonstrate it by taking a tech. for a road test.
Do not just drop it off with a verbal complaint.....the mechanic has to experience what you are concerned with so he/she can duplicate it when they road test it again.
Rob
