General Motors is spending billions to upgrade certain factories, prepping them to build the next-generation Silverado and Sierra. As part of a four-year contract agreed to in September 2016, $310 million was invested in Oshawa’s so-called consolidated line so that it could handle truck production.

Now, Automotive News is reporting that while the Canadian plant may indeed be building trucks, it won’t be the snazzy new ones set to hit dealer lots for the 2019 model year. Instead, Oshawa will simply paint and perform final assembly of the outgoing 2018 trucks.

“Oshawa will be building current model pickups that helps us meet customer demand while we are in transition to next-generation pickups,� GM Canada spokeswoman Jennifer Wright told Automotive News Canada. “This strategy will help us meet customer demand as we transition our production and introduce our exciting new models into the market starting later in 2018. The length of the program in Oshawa will be dependent on market demand.�

Oh dear. If one were to be particularly unkind, they might suggest that GM played the old switcheroo on Oshawa, promising trucks but not specifying which exact ones. The statement saying the timeframe for Oshawa truck production is dependent on demand for the old model should sound several alarm bells and klaxons for anyone with an active interest in that plant’s production of vehicles.

This is particularly perplexing news, given GM documentation dated just last week seemed to indicate that the next-generation Silverado and Sierra were slated to be built in the Great White North. The 2019 Silverado pickups are listed as having a “Region of Build” in both the United States and Canada. Looking more closely, the document reveals this information pertains to the 2500 and 3500 Heavy Duty series of trucks. It also coughs up details about specific plant locations: Flint and Fort Wayne are listed in addition to the Canadian facility of “Oshawa #2.”

Those lame-duck 1500 series trucks, now known as the Silverado Legacy and Sierra Limited, have only a single country – Canada – listed under its Region of Build. The plant location is specified as “Oshawa #2.” In a telling find, high-zoot trims (Chevy’s High Country GMC’s SLT and Denali) have vanished from the old-style pickups. The magnificent 6.2-liter V8 is gone, too.

A quick reminder: for vehicle built on North American soil, a VIN starting with 1, 4, or 5 denote an American assembled vehicle. The digit 2 is reserved for machines rolling out of Canadian plants, and a 3 means the rig was Hecho en Mexico.

GM’s VIN Standard document is full of little tidbits, including a reminder that the Cadillac CT6 includes China’s Jinqiao East plant in its Region of Build in addition to the United States facility of Detroit Hamtramck.

The entire filing, all 54 pages of it, can be found here.