The GMC P Series is commonly referred to as the “Buffalo bus”. It was built by General Motors between 1966 and 1980.
Powered by 8V71 engines, or 71-series Two-Cycle Diesel, which is mounted at a 45-degree angle, these vehicles pack a serious punch on the road. At first, it was introduced as a manual-only transmission, but in the later generations an automatic version was released as well. This vehicle is a true workhorse that will get the job done.