Satellite radio broadcaster SiriusXM said it had extended its long term agreement with General Motors into 2027.

GM also will increase vehicles equipped with the system to nearly all Chevrolet, Buick, GMC and Cadillac vehicles beginning with model year 2021.

Steve Cook, EVP, sales and automotive, for the supplier, said:  "GM has produced tens of millions of vehicles with SiriusXM installed over the course of nearly 20 years and will deliver to more of their customers than ever as part of this new agreement."

GM vehicle buyers will continue to receive a three month trial subscription plus access on the app and on connected devices and speakers at home. Used vehicle buyers will also be offered the trial.

GM also will continue to roll out SiriusXM in 1m vehicles and that number will increase in future. The product combines satellite and streaming content.