GMC Sierra Owners Manuals

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Tire Sealant
Read and follow the safe handling instructions on the label adhered to the sealant canister. Check the tire sealant expiration date on the sealant canister. The sealant canister should be replaced b ...

California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel i ...

If You Cannot See the HUD Image When the Ignition Is On
• Is anything covering the HUD lens? • Is the HUD dimmer setting bright enough? • Is the HUD image adjusted to the proper height? • Are you wearing polarized sunglasses? • Still no HUD i ...