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Cars & Concepts

GMC adds AT4 subbrand, Sierra 1500 features to HD lineup

GMC's 2020 Sierra 2500HD AT4. (GMC)
MW
By:
Michael Wayland
m
By:
mwayland@crain.com
|
January 23, 2019 12:15 AM

SAN DIEGO — GMC is expanding its new AT4 subbrand and many defining characteristics of the Sierra 1500 to its heavy-duty brethren.

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