He breathed his last at the DMC Hero Heart Institute at Ludhiana today.
Gurdev was 85 and is survived by two sons and a daughter.
Cardiologist Dr Vishwmohan said that he was a chronic cardiac patient. Recently he had developed multiple problems, the doctor said, adding that Gurdev had been admitted to the hospital on March 9.
One of his sons, Kewal Singh Badal is a former Vice President of the Shiromani Gurudwara Parbhandhak Committee (SGPC). His other son Suba Singh unsuccessfully contested the recent assembly polls from the Jaito Assembly seat.
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Meanwhile, Punjab Chief Minister Capt Amarinder Singh expressed profound grief and sorrow over the demise of Gurdev.
In his condolence message, Capt Amarinder said that he was pained to learn about the demise of veteran Akali leader, who served the state especially the weaker sections of society with commitment and dedication.
Sharing his heartfelt sympathies with the members of the bereaved family and their friends. The Chief Minister prayed to the Almighty to grant eternal peace to the departed soul and give strength and courage to the family to bear this irreparable loss.