- 2019, 2025–2026 Factory-verified
touch-up paint WA-8555; 2026: the black two-tone roof is not available with it
Also described as BlackPaint, Onyx BlackPaint, solid, BlackBlack (touch-up WA-8555)
Also documented for BuickCadillacGMC
Documented applications
- 2025–2027 Factory-verified
touch-up paint WA-8555; also a Police Package solid paint
- 2019 Factory-verified
touch-up WA-8555;
- 2015 Single-source
new for 2015 (GM Authority 2015 changes page)
- 2015–2019, 2021–2022 Factory-verified
touch-up WA-8555; the paint of PDL and PDN; GM Authority shows it on the 2021 Colorado; the merged Canyon doc names the GMC version Onyx Black; 2018 from GM's 2018 Colorado order guide (PDF); 2021 from the upfitter list GM files for 2021 and 2022
- 2020 Single-source
touch-up WA-8555; from GM Authority's 2020 Colorado colors
- 2023–2027 Factory-verified
touch-up WA-8555
- 2014–2019 Factory-verified
touch-up WA-8555; 2014, 2019: from GM order-guide copies (Corvette Action Center; 2019 also GM Authority)
- 2020, 2022–2027 Factory-verified
touch-up WA-8555
- 2018–2019 Factory-verified
touch-up WA-8555; only in: hatch
- 2025–2027 Factory-verified
2025–2027: with all interiors; touch-up WA-8555; 2027: requires PDR (two-tone roof delete), RS only
- 2015–2018, 2022–2027 Factory-verified
touch-up WA-8555; the Upfitter lists read Black (8555)
- 2014–2016 Factory-verified
touch-up WA-8555
- 2025–2027 Factory-verified
touch-up WA-8555; 2025–2027: any interior; Sierra EV reads "Paint, Onyx Black"
- 2027 Factory-verified
touch-up WA-8555
- 2016–2019 Factory-verified
touch-up paint WA-8555; 2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide
- 2023, 2025–2027 Factory-verified
touch-up WA-8555; the 2023 Upfitter list prints it as primary color exterior (paint code 8555)
- 2025–2026 Factory-verified
touch-up WA-8555
- 2022–2026 Factory-verified
touch-up WA-8555;
- 2012 Single-source
dropped for 2013 (GM Authority 2013 changes article (not a GM document))
- 2015–2019 Factory-verified
touch-up WA-8555; 2018–2019 from GM's 2018 and 2019 Suburban order guides (GM Authority copies)
- 2022–2023, 2025–2027 Factory-verified
the body-builder lists read Black (G) 8555
- 2015–2019 Factory-verified
touch-up WA-8555; 2018–2019 from GM's 2018 and 2019 Tahoe order guides (GM Authority copies)
- 2022–2023, 2025–2027 Factory-verified
the body-builder lists read Black (G) 8555; also offered on the Police Package and Special Service color pages (2025–2027)
- 2014–2015 Factory-verified
touch-up WA-8555; with every interior; 2014 from GM's 2014 Fleet Car & Truck Guide
This page aggregates every documented appearance of GBA in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.