This year took another icon when Alan Thicke passed away from a fatal heart attack at the age of 69 on Tuesday.

The Canadian actor, who famously played Jason Seaver on the ’80s sitcom “Growing Pains” left an impression with his co-stars, who, after hearing the news are sharing their heartbreak with fans.

Ashley Johnson, who played Thicke’s on-screen daughter was the first to share her condolences, tweeting a quote from Washington Irving: “There is a sacredness in tears… they are the messengers of the overwhelming grief, of deep contrition, and of unspeakable love,” posted along with a photo of her and Alan. The post has since been deleted.

RELATED: Celebrities React To The Passing Of Alan Thicke

Kirk Cameron shared his grief in a touching Instagram post:

“I’m shocked and truly heartbroken today at the news of his death,” Cameron captioned the shot. “Alan was a generous, kind and loving man. I am so blessed to have grown up with him.”

Leonardo DiCaprio shared a touching message to his Facebook page on Wednesday, saying “Alan was a devoted father, husband, friend and role model… I will be forever grateful for the opportunity I had to work with Alan early in my career.” Thicke had just reminisced about working with DiCaprio on “Growing Pains” when ET Canada caught up with him recently at the Whistler Film Festival. See DiCaprio’s statement below.

Alan was a devoted father, husband, friend and role model. He knew how to harness the power of the entertainment… Posted by Leonardo DiCaprio on Wednesday, December 14, 2016

Tracey Gold couldn’t find the words earlier Wednesday, so she tweeted a photo of the late actor instead. Later in the day, the actress’ rep released the following statement from Gold on Thicke’s passing: “I am in absolute shock and so unbelievably sad. In 1985 The Seavers became a family and Alan was our patriarch. I looked up to Alan and admired him greatly. I always listened to his advice and wisdom. He was so kind and warm and always made me laugh. He was incredibly proud that our ‘Growing Pains’ days were about family, all our families. He was truly an amazing father. His sons were his world. Our ‘Growing Pains’ Family is hurting today and that will not go away anytime soon. He was so full of life. I thought we had so much time. I’m not ready to say goodbye. I am so honoured to have been his daughter for seven beautiful years. I love you Alan and will miss you forever.”

I just can't find the words right now. pic.twitter.com/vM28SLy9Rb — Tracey Gold (@TheTraceyGold) December 14, 2016

Photo: Getty

Jeremy Miller’s rep released a statement to ET Canada on his behalf, saying “Jeremy loves Alan deeply. He has lost a father and is heartbroken. He cannot speak with anyone right now. He is devastated as is everyone.”

Thicke’s TV wife, Joanna Kerns replied to condolences on Twitter after the news broke of his shocking death: “I loved Alan- he was one of the smartest and funniest men I have ever known- we shared a life changing success and friendship. Alan made me laugh everyday-usually at myself. Loved you dearly RIP old friend.”

Thicke starred on “Growing Pains” from 1985 – 1992, returning to the beloved character for the show’s two TV films in 2000 and 2004. He will always be remembered as Canada’s favourite TV dad.

Sangita Patel recently sat down with the actor on the set of his new YTV show “The Stanley Dynamic” where he shared his idea for a modern day reboot of “Growing Pains”.