open the doors on a nice hot sunny day, try to park the truck so that the sun can hit the floor area or at least on the pass side. It might take a couple of times. Most sprays will just hide, and when the humidity goes up here comes the smell.
GM says; reference; factory service manual. close off the cab, turn up the heat full for 10 min, while running deodorize. The common thread here is hot dry air, you want to dry it out .