GM B platform
Overview
 
The B platform, or B-body, was General Motors' full-size
Full-size car
A full-size car is a marketing term used in North America for an automobile larger than a mid-size car. In the United States, the EPA uses "large car" to denote full-size cars....

 rear-wheel drive automobile platform
Automobile platform
An automobile platform is a shared set of common design, engineering, and production efforts, as well as major components over a number of outwardly distinct models and even types of automobiles, often from different, but related marques...

. It was closely related to the C-body
GM C platform
The General Motors C platform was an automobile platform designation used for full sized luxury cars until 2005.-Rear wheel drive:...

 and D-body
GM D platform
The D platform, or D-body was Cadillac's full-size rear wheel drive automobile platform designation, used until 1996. It was closely related to the GM B platform and C platform.All D-bodies were built in Arlington, Texas from 1988-1996 model years...

 and was used for coupé
Coupé
A coupé or coupe is a closed car body style , the precise definition of which varies from manufacturer to manufacturer, and over time...

s, sedans, and station wagon
Station wagon
A station wagon is a body style variant of a sedan/saloon with its roof extended rearward over a shared passenger/cargo volume with access at the back via a third or fifth door , instead of a trunk lid...

s.

As a body designation, modern rear drive B-body production began in 1959, when General Motors restyled and redesigned all of its standard-sized and luxury cars - the first time in GM's history that such had been accomplished in the same year.
 
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