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2018 GMC Sierra Trim Levels
The 2018 GMC Sierra is offered in four trim levels, including:
2018 GMC Sierra 1500 trim levels
- Sierra (1SA/base)
- SLE (3SA)
- SLT (4SA)
- Denali (5SA)
2018 GMC Sierra HD trim levels
- Sierra (1SA/base)
- SLE (3SA)
- SLT (4SA)
- Denali (5SA)
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- 2018 GMC Sierra Denali