07 rendezvous rpm surge

[adillar2]

I have an 07 rendezvous. The rpm's will jump around 500 while driving normally causing the car to jerk. If you push the gas further it will downshift and speed up, but once you go back to cruising speed it will jerk. The problem used to only be at higher speeds around 70, but now it does it even at lower speeds. I tried changing the transmission fluid and filter and the TCC solenoid, but that had no effect. I am not sure whether it is an engine or transmission problem. It idles fine and starts great only problem i see is the jumping RPM's. Also there is no CIL and no stored codes. Below is a video showing the issue.

[video=youtube;9Fw7HW6sLCE]http://www.youtube.com/watch?v=9Fw7HW6sLCE[/video]

 

[adillar2]

I have an 07 Rendezvous. The RPM's will jump up around 500 while driving normally causing the car to jerk. If I push the gas further it will downshift and speed up, but once you go back to cruising it will resume the same issue. The problem used to be at higher speeds (around 70), but now it does it even at lower speeds. I changed the transmission fluid, filter, tried different transmission additives, and changed the TCC solenoid with no change. I am not sure if it is an engine or a transmission issue. If anyone has any thoughts/suggestions i would appreciate them.

 

[adillar2]

Here is a video of the problem

[video=youtube;9Fw7HW6sLCE]http://www.youtube.com/watch?v=9Fw7HW6sLCE&feature=em-upload_owner[/video]

 

[Buick Customer Service]

Hi adillar2,

Sorry to hear about your concern! I realize you are seeking opinions from other forum members, but please do let us know if you would like our assistance in contacting your dealership for further technical advice. We are happy to help at any time!

Jessica
Buick Customer Care

 

[adillar2]

Well I found my problem. Describes it well here.

 

[Spiker]

Well I found my problem. Describes it well here.

Thank You, will be visiting the Mech. again soon!!!