For sale: Available AC knobs that fit 90s models 94-99 GMC trucks and vans. A quantity is available and all are original. 1- Original AC knobs available for GMC models 92-94 GMC trucks and vans. 2- Original AC knobs available for GMC models 95-99 GMC trucks and vans. Location: Jeddah / Al-Baha, and shipping service is available to all regions of the Kingdom.