1995 GMC Sonoma Owner's Manual - Page 275

Vehicle Identification Number (VIN) This is the legal identifier for your vehicle. It appears ona plate in the front You can see it if you corner of the instrument panel,on the driver's side. look throughthe windshield from outsideyour vehicle. The VIN also appears on the Vehicle Certification and Service Parts labelsand the certificates of title and registration. Engine Identification The eighth character in your VIN is the engine code. This code will help you identify your engine, specifications, replacement parts. and 6-57