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I believe it's 8yr/80k GMC Owners | Vehicle Warranty and Protection Plans 00-Introduction_en_US 1..4 (gmc.com) The Federal Emissions Control System Limited Warranty covers your vehicle’s emissions control systems. Additionally, if your vehicle conforms to or is certified for California regulations, it may also be covered by the California Emissions Control System Warranty. Go here to see if the California Emissions Control System Warranty applies to your vehicle. For any emissions-related component that requires repair, the warranty that has the broadest coverage applies. Federal Emissions Control Warranty Limited warranty coverage depends on the type of vehicle and the emissions component. Light-Duty Car or Truck Emissions-related components are warrantied for 2 years or 24,000 miles, whichever comes first Select emissions-related components are warrantied for 8 years or 80,000 miles, whichever comes first Covered components include: catalytic converters, engine control module, transmission control module and other diagnostic-emissions-critical electronic control units Heavy-Duty Truck Emissions-related components are warrantied for 8 years or 80,000 miles, whichever comes first Go here for a full list of what is and what is not covered. California Emissions Control System Warranty Limited warranty coverage depends on the type of vehicle and the emissions component. Light-Duty Car or Truck Emissions-related components are warrantied for 3 years or 50,000 miles, whichever comes first Select emissions-related components are warrantied for 7 years or 70,000 miles, whichever comes first Heavy-Duty Truck Emissions-related components are warrantied for 5 years or 50,000 miles (gasoline engines) or 5 years or 100,000 miles (diesel engines), whichever comes first Transitional Zero Emission Vehicle (TZEV) Emissions-related components are warrantied for 15 years or 150,000 miles, whichever comes first TZEV Hybrid Batteries are covered for 10 years or 150,000 miles, whichever comes first Go here for a full list of what is and what is not covered.

I have a leak on the drivers side, easily can see the black soot and will be fixed under warranty (Emissions Warranty). When looking at the exhaust manifold is it normal to see a crack around the holes for the bolts? It appears to me that the manifold is cracked near the bolt holes, maybe that's the way they are built I don't know. Was looking for confirmation on that before I bring it to the dealership. Thanks