Review: 2021 GMC Sierra 1500 AT4 3.0L Duramax | Crew Cab Long Box, Kicker Audio Tailgate Speakers
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Review: 2021 GMC Sierra 1500 AT4 3.0L Duramax | Crew Cab Long Box, Kicker Audio Tailgate Speakers
Let's take an in-depth look at the latest 2021 GMC Sierra 1500 AT4 3.0L Duramax Crew Cab Long Box in Onyx Black. This particular GMC Sierra is equipped with the following features: - 3.0L Duramax Diesel I-6 Engine (277HP / 460lb-ft Torque) - 10-speed automatic transmission - MultiPro Tailgate (6-functions) - Kicker Audio Tailgate Speakers - 20 ...
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