* The Vehicle Identification Number (VIN): The VIN contains coded information about your truck, including the engine. You can decode the VIN using online VIN decoders (many are free) or by contacting a Chevrolet dealership. The VIN is usually found on the driver's side dashboard, visible through the windshield.
* The Driver's Side Door Jamb: The sticker on the driver's side doorjamb usually lists key vehicle specifications, including engine size (often expressed in liters).
* Your Owner's Manual: The owner's manual will clearly state the engine size and other specifications for your specific vehicle.
* The Engine Bay: The engine itself usually has a sticker or casting marking indicating the displacement (size) of the engine. This is sometimes harder to find and read than the other methods.
The most straightforward methods are checking the door jamb sticker and the owner's manual. If you don't have the manual, a VIN decoder is a reliable alternative.