A new version of the Buick Enclave, one nine new models coming from the luxury brand and sibling GMC.

Buick and GMC will introduce nine new or significantly updated models over the next 12 months, starting this autumn with completely redone versions of the Buick Enclave and GMC Acadia crossovers.

At GMC, the new additions to the product line will include the rebirth of the Canyon midsized pickup truck, which will be built in Wentzville, Missouri. Last month, General Motors closed an assembly plant in Shreveport, Louisiana that had been producing its smaller trucks. The timing for the all-new GMC Canyon’s launch will be announced later.

The return of the Canyon runs counter to recent industry trends.  Ford, for example, abandoned its long-in-the-tooth Ranger, Chrysler also got out of the midsize truck market.  But, “We believe that introducing a new, agile and efficient mid-size Canyon will meet the needs of many pickup buyers,” said Tony DiSalle, vice president of Buick and GMC Marketing.

GMC Marketing VP Tony DiSalle unveiling the new 2013 GMC Denali.

“While we continue to make strong progress in fuel economy gains on our full-size trucks, we know that there is a group of customers who want the functionality of a truck but may not need a full-size pickup,” DiSalle added.

Another big model push will come at Buick, which only a few years ago had pared its line-up down to a meager three models. The new Buick Encore, which will be priced at $24,950 including a $750 destination charge, arrives in early 2013.

GM’s mid-luxury brand will also see an updated version of the Buick Regal and LaCrosse sedans roll into its showrooms.  The GMC division, meanwhile, will update its Sierra and Sierra HD full-size pickups, along with the Yukon and Yukon and Yukon XL full-size SUVs.

In addition to these nine models, GMC will offer luxury-appointed Denali versions of its four upcoming vehicles while a new 2.0L turbocharged powertrain will be available in the Buick Verano this year.

By the end of 2013, the oldest non-commercial models in a Buick/GMC showroom will be the Buick Verano sedan and GMC Terrain SUV.  Verano has been in dealer showrooms for less than a year and has gained sales volume every month since launch. Terrain arrived as a 2010 model and is on pace for its best sales year ever in 2012. A new Denali luxury trim level recently was added.

DiSalle said Buick and GMC have grown together as distinctly different but complementary brands. Together, they have sold more than 400,000 vehicles so far this year, a pace that should allow each brand to achieve a third consecutive year of sales gains.

“We’re not only selling more vehicles, we’re bringing new customers to the Buick and GMC showroom,” said Brian Sweeney, vice president of Buick and GMC Sales and Service. “Both brands report more than 40 percent conquest sales. Buick was the only automotive brand in the United States to reduce the average age of its buyer during the past five years, and GMC continues to attract more female buyers and – with Denali vehicles – more import and luxury owners.

Overall, General Motors will have 70% all-new or significantly refreshed products across its four U.S. brands in 2012-2013, DiSalle noted.