- 2026–2027 Factory-verified
O on all trims; fleet telematics data plan
P1P Factory-verified
Also described as API Pro plan, 36 months (fleet)
Also documented for BuickCadillacChevrolet
Documented applications
- 2026–2027 Factory-verified
O on all trims
- 2026–2027 Factory-verified
O: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2026), Passenger 1LS, Passenger 1LT
- 2027 Factory-verified
all trims: O
- 2026–2027 Factory-verified
Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: O
- 2026 Factory-verified
- 2026–2027 Factory-verified
O on all trims; fleet, fleet daily rental and government order types; fleet telematics data plan
- 2026–2027 Factory-verified
2027: O on all trims
- 2026–2027 Factory-verified
2027: O on all trims
This page aggregates every documented appearance of P1P in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.