Model family
GMC Sierra 4WD AT4
Observed 2020–2021 (US EPA) · observed model years, not a production range
No public GMC Sierra 4WD AT4 builds yet
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Add my carObserved 2020–2021 (US EPA) · observed model years, not a production range
Public garage vehicles linked to this model show up here. Add yours and set it to public.
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