Cruising down the highway at a sustained speed using the cruise control or not results in the transmission spiking anywhere between 200 to 600 rpm. The jumps in RPM are so violent that sometimes it feels as though the car is being pushed from behind (kind of unnerving at highway speeds).
Here is a video I took with the cruise control set at 100 km/h on a perfectly flat road with no wind.
http://s232.photobucket.com/albums/ee84 ... 1fa6e5.mp4
I showed this video to the service department manager at the Suzuki dealership and he asked me to email it to him so that he could forward it on to Suzuki.
This is all I know so far:
- It only does it in Automatic mode on the transmission.
It does it with or without the cruise control on, but is more violent with the cruise on.
It seems to be getting worse each time we drive the car.
The RPM jumps are higher and more violent the faster you go.