Candace Cameron Bure reacts to John Stamos in rehab: 'It was a surprise'

As Candace Cameron Bure gears up for Fuller House, she's also ready to welcome John Stamos back with open arms once he completes his stint in rehab.

The 51-year-old actor checked himself into a treatment facility for substance abuse earlier this month shortly after he was arrested in Beverly Hills on suspicion of DUI.

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Candace tells ET's Cameron Mathison that it was a "surprise" to hear that Stamos was in rehab. When asked if she saw any signs of a problem over the years, the 39-year-old actress insisted, "Oh no, no."

Photos of "Full House" throughout the years: