- GMC Sierra HD (2020) – photo's, information & specs NetCarShow.com
- GMC's next Sierra HD pickup can be seen by trailer Engadget
- 2020 GMC Sierra HD offers loading technique – Autoblog Autoblog
- 2020 GMC Sierra HD comes with more Tech and New Off-Road Trim Motor1.com
- 2020 GMC Sierra HD First choice: Heavy-Duty Competition Motor Trend
- See full coverage on Google News
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