Low rpm acceleration jerk

[ahtim]

Hi my csl is 28000miles, barely drive it, and recently when I drive it, during low rpm, 2k ish rpm, when I try to full throttle it, eg:6hear low rpm full throttle, it jerks once at 2k ish rom to 3k rpm, any idea please, when it goes over hat, it is perfectly fine.

Thanks

Will