How to Read RPO Codes
Your car's RPO code is the Regular Production Option code that denotes what options your car came with from the factory. Here's how to decode them.
Every new car has a unique set of characters known as a vehicle identification number (VIN). This 17-digit string of numbers and letters is like a birth certificate, providing information about the car that can be used for everything from ordering replacement parts to verifying its authenticity.
The VIN can be found on the driver's side dashboard, on the door pillar, or in other locations depending on the make and model. Once you've located it, take a look at position 9 of the VIN. This is where you'll find the vehicle's RPO code.
RPO codes are 4-character alphanumeric codes that identify each option installed on the vehicle at time of manufacture. For example, if your car has heated seats, you might see an RPO code of H2U7. A complete list of GM RPO codes can be found here: https://www.gmpartsdirect.com/oem-parts/gm-rpo-codes
To read an RPO code, simply look up the 4 characters in the corresponding table and note which options are included with your vehicle. In our example above, H2U7 would indicate that your car has heated front seats and a rear seat entertainment system (among other things).
Keep in mind that not all cars will have an RPO code - some manufacturers don't use them at all! And even if your car does have one, it's possible that it won't be listed in any public database (especially for older vehicles). So if you're trying to track down a specific option or feature on your car and coming up empty-handed, don't despair - there could still be hope.