I pulled an aluminum car trailer with a 1990 shortbed 1500 on it and this 2012 GMC with the the 5.0 motor with the 6 speed automatic pulled this load to perfection.Plenty of power and smooth shifting.
The Sierra's recent updates include a fresh interior, new trim levels, more safety features, and the availability of the Super Cruise active driving assistance system. Power delivery is smooth and ...
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