John Oswell left Langley, B.C. Thursday morning in a B.C.-registered transport truck, en route to Airdrie, Alta.
He never arrived.
Langley RCMP issued a public plea for information over the weekend.
At 11:30 a.m. MT Sunday morning, Calgary police were called about an unattended Freightliner tractor unit with a B.C. licence plate, parked in a lot in the 2300 block of 50th Ave. SE.
Inside, officers found the body of a man.
His death is not considered suspicious, the police service said.