Chevrolet Silverado: Fuel / Recommended Fuel (6.2L V8 Engine)

Chevrolet Silverado 2019-2026 Owners Manual / Driving and Operating / Fuel / Recommended Fuel (6.2L V8 Engine)

Premium unleaded gasoline meeting ASTM specification D4814 with a posted octane rating of 93 — (R+M)/2 — is highly recommended for best performance and fuel economy. Unleaded gasoline with an octane rated as low as 87 can be used. Using unleaded gasoline rated below 93 octane, however, will lead to reduced acceleration and fuel economy. If knocking occurs, use a gasoline rated at 93 octane as soon as possible, otherwise, the engine could be damaged. If heavy knocking is heard when using gasoline with a 93 octane rating, the engine needs service.

Do not use any fuel labeled E85 or FlexFuel. Do not use gasoline with ethanol levels greater than 15% by volume.

Recommended Fuel (Except 6.2L V8 Engine)

For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax diesel supplement. If the vehicle has a yellow fuel cap or a yellow sticker on the fuel door, E85 or FlexFuel can be used...

Prohibited Fuels

Caution Do not use fuels with any of the following conditions; doing so may damage the vehicle and void its warranty: For vehicles that are not FlexFuel, fuel labeled greater than 15% ethanol by volume, such as mid-level ethanol blends (16–50% ethanol), E85, or FlexFuel...

Other information:

Chevrolet Silverado 2019-2026 Owners Manual: Engine Fan

If the vehicle has the Duramax diesel engine, see the Duramax diesel supplement. All Engines Except 6.6L V8 Engine (L8T) The vehicle has electric cooling fan(s). The fans may be heard spinning at low speed during most everyday driving. The fans may turn off if no cooling is required...

Chevrolet Silverado 2019-2026 Owners Manual: Emergency

Emergency Services require an active safety and security plan. With Automatic Crash Response, built-in sensors can automatically alert a specially trained OnStar Advisor who is immediately connected in to the vehicle to help. Press for a priority connection to an OnStar Advisor who can contact emergency service providers, direct them to your exact location, and relay important information...