It's true, there is a difference with California legal and Federal legal emission requirements. And, for the most part California is stricter. However, a USED vehicle (such as this 2003 GMC Sierra 1500 from Oklahoma; which indicates it is 49-state emission equipped) which has all the Federal required emission components, can pass the California smog inspection process and be legally registered in this state as long as its exhaust emissions fall within California's limits.
posted by SmogTips Support