- 2019 Factory-verified
touch-up paint WA-434B; extra cost; not available on L
Also described as Cajun Red Tintcoat
Also documented for BuickCadillacGMC
Documented applications
- 2017 Factory-verified
LT, Premier: O; extra charge; touch-up paint WA-434B; includes TUS grille
- 2017–2019 Factory-verified
touch-up WA-434B; premium paint; GM Authority shows it on the 2019 Colorado; the merged Canyon doc names the GMC version Red Quartz Tintcoat; 2018 from GM's 2018 Colorado order guide (PDF)
- 2020 Single-source
touch-up WA-434B; premium paint; from GM Authority's 2020 Colorado colors
- 2018–2019 Factory-verified
touch-up WA-434B; extra cost; not on L or LS
- 2018–2019 Factory-verified
touch-up WA-434B; extra cost
- 2018 Confirmed
new for 2018, extra cost (GM's 2018 Impala RPO change list, GM Authority)
- 2018–2019 Factory-verified
touch-up paint WA-434B; extra charge; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide
- 2017–2019 Factory-verified
2017: not on the LS sedan, extra cost; 2018–2019: not on the LS sedan or LT 1FL, extra cost
- 2018–2019 Factory-verified
touch-up WA-434B; extra cost; not on L, LS (1FL) or LS
- 2018–2019 Factory-verified
extra cost, retail orders only, not on LS; the 2018 guide marks it new; GM Authority's 2021 changes page says it was deleted for 2021
- 2018 Factory-verified
touch-up WA-434B; extra cost; not with the Jet Black/Brandy interior; printed as new in GM's 2018 order guide; also on GM Authority's 2018 RPO change list, which it calls GM's official list
This page aggregates every documented appearance of GPJ in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.