The older model grey Ford truck was seen near O'Kelly Chapel Road, just north of the Highway 55/I-540 exchange.
"We encourage everyone to take a moment to review this video and photo and share with us anything they may know, no matter how small or insignificant the detail may seem," said Captain Mike Williams, Criminal Investigations with the Town of Cary. "To help prevent these types of crimes, remember to be alert and report any suspicious activity."
Police said they're working to solve some 76 thefts at Cary construction sites over the past eight months.
Anyone with information can call Crime Stoppers at (919) 226-CRIM(E) or contact Sgt. Randy Byrd at (919) 380-2133.