Where do I find the RPO code on my Chevy Silverado?
Where do I find the RPO code on my Chevy Silverado? Prior to 2018, General Motors typically printed the entire list of RPO codes on a certification sticker, usually found in the glovebox. After 2018 and during the 2021 model year, that sticker was moved to the lower driver’s door jam. RPO codes are now encoded in a 2d data-matrix code that can easily read by most modern smartphones. Why is my Silverado Sierra engine popping up? NO engines popping up. When I got to it I tried to go through the basics of troubleshooting- Turned on key to listen...