Check the bolts on the differentials. There should be a tag on one of them. The codes on that tag will tell you the gear ratio. The VIN will not give you gear ratios in most cases.
Frame. You will also find your Chevrolet VIN number stamped on the frame. Open the hood and look at the engine bay. The VIN will typically be located near the strut tower or firewall.
You can find the VIN in the lower corner of your windshield on the driver's side. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine code. Just tell the store clerk those two characters and you're in business.
How to Decode a 13 Digit VIN Number
- Examine the first digit of the VIN number to find the manufacturer country of origin.
- Find the second digit in the VIN number sequence to determine the manufacturer of the vehicle.
- Read the third character in the VIN number sequence to find out the vehicle type.
How to Tell What Model Engine Is in My Truck?
- Look at the vehicle identification number (VIN).
- Write down the vehicle identification number carefully and vertically.
- Begin to decode the vehicle identification number.
- Locate the manufacturer decoder website.
- Determine the engine type.
How to decode a VIN?
- Digits 1 through 3 combined is the WMI, (World Manufacturer Identifier).
- Digits 4 through 8 represent the vehicle descriptor section.
- Digit 9 is a check digit.
- Digits 10 through 17 is the Vehicle Identifier Section.
- The 11th digit is the manufacturer's plant code.
How to Decode a GMC VIN?
- 1GT = Manufacturer (GMC United States)
- R = Platform Code (Sierra 1500)
- 1 = Platform Series Code.
- V = Restraint Type.
- E = Body Style (4-Door Pick-up)
- C = Engine Type (L83 – VVT, AFM)
- 6 = Security Code.
- E = Model Year (2014)
FYI: You can get your car's build sheet from GM with just an email request. Send an email to , include your name and your vehicle's VIN and they will email you back your build sheet in PDF form.
Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box.
Chevrolet Trucks
- 2021 Chevrolet Colorado Crew Cab.
- 2021 Chevrolet Colorado Extended Cab.
- 2019 Chevrolet Silverado 1500 Crew Cab.
- 2019 Chevrolet Silverado 1500 Double Cab.
- 2019 Chevrolet Silverado 1500 LD Double Cab.
- 2020 Chevrolet Silverado 1500 Regular Cab.
- 2020 Chevrolet Silverado 2500 HD Crew Cab.
The 1918 One-Ton has the distinction of being the first purpose-built Chevrolet truck.
Decoding The Chevrolet Truck VIN. "Truck serial number is located on the left front body hinge pillar, except on models with cowl less windshield where the serial plate is located on the left hand cowl side inner panel except forward control chassis serial number plates installed by the body builder".
The VIN, also known as the Chassis Number, is an exclusive car identification number allotted to your car by the manufacturer. Through the car chassis number, registration authorities use this number to register your car. This exclusive number is a 17-digit number which distinguishes it from other models and makes.
The VIN can tell you practically anything about the car, including color, year, make and model. The registered owner is also tied to the vehicle, so looking up the VIN can reveal the history of ownership, which includes the present owner.
The National Insurance Crime Bureau provides up to five free VIN checks in a 24-hour period from the same IP address. This report will tell you the vehicle's current state of title and last title date, brand history, mileage, total loss history, and salvage history.
What Does the 10th Digit in a VIN mean? The 10th character, which is found in the VIS, indicates the vehicle's model year. Note: In addition to the other excluded letters from the VIN, the number zero and the letters “U” and “Z” are also not used in the model year position.
First digit is the country; 1, 4 or 5 = USA; 2 = Canada, 3 = Mexico, J = Japan, W = Germany. Tenth digit is the model year and is sequential; A = 1980 or 2010, B = 1981 or 2011, 1 = 2001, 2 = 2002.
Vehicles with VINs that start with "J" were produced in Japan.
A vehicle's identification number (VIN) is a unique identifier. Vehicles manufactured prior to 1981 may have as few as 5 digits to as many as 13 digits. Within the standard 17 digit VIN, each digit or group of digits identifies certain aspects of the make, model, manufacturing plant, and the order it was manufactured.