What causes sputtering on 2009 Chevrolet Traverse

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
my 2009 started to sputter two weeks ago. I thought it was bad gas but soon realized it was not.

It is worst between 1.5 - 2.5 RPM's.

What causes this?
(1) Answer
| |
possibly a crossfire in the ignition system. do you have a ck eng like on?
Qualified Local Chevrolet Shops
Qualified Chevrolet Shops For This Repair