When doing replacement or upgrading on 2008 – 2018 Buick Enclave, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

High Beam and Low Beam Headlight2008 – 2012 D1S
2013 – 2018 D3S
Front Fog Light2008 – 2012 H8/H11/H16
Back Up Light2008 – 2018 921
Brake2008 – 2018 7443
Daytime Running Light2008 – 2012 3157
Dome Light2008 – 2018 212-2
Front Side Marker2008 – 2012 12396NA
2013 – 2018 12961
Front Turn Signal2013 – 2018 7444NA
2008 – 2012 HPC24NA
License Plate2008 – 2018 168
Parking Light2008 – 2012 12396NA
2013 – 2018 194
Rear Side Marker2008 – 2018 194
Rear Turn Signal2008 – 2018 7443
Glove Box2008 – 2012 194
Inner Tail Light2008 – 2018 194
Map Light2008 – 2018 194
Outer Tail Light2008 – 2018 7443