Sierra Leone | Santa Cruz de la Sierra | Sierra Nevada | Sierra Club | Sierra Nevada (U.S.) | GMC | Sierra Entertainment | Ford Sierra | Bo, Sierra Leone | Sierra Leone National Premier League | Sierra | Sierra Nevada de Santa Marta | Sierra Maestra | Sierra Leone People's Party | Sierra Leone Civil War | GMC (automobile) | Special Court for Sierra Leone | Sierra Madre Occidental | Rubén Sierra | Javier Sierra | Antofagasta de la Sierra | The Treasure of the Sierra Madre (film) | The Treasure of the Sierra Madre | Sierra Leone Creole people | Northern Province, Sierra Leone | Sierra Madre | Sierra Boggess | High Sierra | Sierra Madre (Philippines) | Sierra Madre Oriental |
At the time of the announcement, the Oshawa Truck plant was manufacturing the 2008 Silverado, Sierra, Sierra Denali Edition, and Sierra Texas Edition.
During the visit of Pope John Paul II to Canada in 1984, the company modified a GMC Sierra truck for use as a Popemobile, a secure form of transport built to withstand a commando attack.