I AM NOTICING MY ENGINE STUMBLES AND TRANSMISSION SHUTTERS WHEN DRIVING. NO PROBLEM WHEN IDLING, BUT WHEN DRIVING A STEADY SPEED/OR WHEN USING SPEED CONTROL THE RPM/TACHOMETER JUMPS A FEW HUNDRED RPM, IT REPEATS THE UP AND DOWN RPM EVERY FEW SECONDS WHEN DRIVING AND IT SEEMS WHEN IT JUMPS UP IN RPM THAT IS WHEN I FEEL THE SHUTTER/OR ENGINE STUMBLE. THE SHUTTER/ENGINE STUMBLE IS ALSO VERY NOTICEABLE WHEN GOING UPHILL. I AM NOT SURE IF IT IS THE TRANS, ENGINE, DRIVE SHAFT, OR SOME CONTROL MODULE. Does anyone know what the problem is? Thanks.

 

Take it to the dealer

 

It is still under warranty. Take it to the dealer.