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Build a GMC® Sierra Heavy Duty | The Official GMC® Website
SponsoredThe 2025 Sierra HD Duramax 6.6L Turbo-Diesel V8 Engine with 975 LB-FT. of Torq…View Top Specs · Learn More at GMC.com · Locate a GMC Dealer
View Top Specs · Learn More at GMC.com · Locate a GMC Dealer