2021 GMC AT4 vs 2021 Chevy RST Z71

Half-ton truck diesel engines have made their way into the big three American brands. Ford and Ram both use 3.0-liter V6 engines while the GM products use a 3.0-liter Inline 6. How does this engine perform in GM’s 1500 twins and what are the differences between the two trucks? GMC has been trying to differentiate themselves from Chevy as a more premium brand. Often times new tech will debut in the GMC and trickle down into the Chevy equivalent i.e. the MultiPro and MultiFlex tailgates. Other times GMC will get tech not available in the Chevy i.e. the Denali exclusive …

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