I had GERD before sleeve surgery. In the past, I had some pretty bad bouts of it where it caused chest pain. I also had GERD pretty bad with the band. I'd also go long periods with nothing, so it was a mystery.
When I started looking into another bariatric surgery, my surgeon cautioned me, but continued to perform pre-op testing. The doctor felt that my GERD was "situational", meaning that it was related to diet and obesity. So, we decided it was worth the risk, but he warned that there were no guarantees that I wouldn't have GERD after the sleeve.
I had surgery on 4/10/18 and about 3 weeks afterwards, I started getting heartburn. I started on Nexium right away and the symptoms are well controlled with it. I wouldn't say that it's severe or "intractable" as my psych evaluator so kindly put it. It's just a little bit of heartburn and if I eat too late in the evening, I will wake with a sore throat (easily remedied by sleeping on an inclined bed).
My advice, discuss with your doctor. Every person is different and every person will respond differently.