For the 2018 Chevrolet Silverado 2500HD, the low-beam headlight uses an H11 bulb, while the high beam uses a 9005. The supplied fitment data does not list a headlight-type variation, so these are the listed applications for this model year.
The fog lights use 5202 LED bulbs. Front turn signals and front side markers use 7443A, while the parking lights use 7443. At the rear, the brake and tail lights use 7444, and the rear turn signals and rear side markers use 7444NA.
- Reverse light: 921
- Center stop light: 921
- License plate light: 2825
- Trunk light: 921
- Vanity light: 6612F
Check the existing bulb and socket before ordering, particularly when replacing bulbs in a modified or previously repaired lighting assembly.