When upgrading the stock halogen / incandescent lamps to led lighting bulbs, the bulb size guide will be much helpful, below are the bulb size guide for 2014~2017 Chevrolet SS; yet it is for reference only, it is suggested to check the owner manual to confirm the bulb size guide is correct before purchasing.
- High beam headlight: H9
- Low beam headlight: D3S
- Fog light: 9145
- Front turn signal light ( blinker light)/ Parking light: 7444NA / 7440A / 7440NA
- Rear turn signal light:7440NA
- Brake light: 7440 / 7440LL
- Tail light: 2825 / 2825L
- Parking / City light: 2825 / 2825L
- Back-up reverse light: 921 / 921K
- 3rd Brake light / Center high mount stop light: LED
- Daytime running light ( DRL ): LED
- License plate light / Tag light: 2825 / 2825L / W5W
- Interior Dome light: 2825 / 2825L
- Interior Map light: 2825 / 2825L
- Front side marker light: 2825 / 2825L
- Trunk / Cargo Area light: 6411
- Rear reading light: 2825
