- 2007–2009, 2014–2016 Factory-verified
the 2014–2016 guides read SiriusXM satellite radio with a 3-month trial subscription.
Also described as SiriusXM satellite radio, 3-month trialSiriusXM with 360L, trial subscriptionSiriusXM satellite radio, trial subscriptionSiriusXM with 360LSiriusXM, trial subscriptionXM Satellite Radio (S-band digital audio)SiriusXM satellite radio, 3-month All Access trialSiriusXM Satellite RadioSiriusXMSiriusXM satellite radio, 3-month All Access trial subscriptionSiriusXM radio, 3-month All Access trialSiriusXM satellite radio, 3 month trial
Also documented for BuickCadillacChevroletHummerOldsmobilePontiacSaturn
Documented applications
- 2017–2019 Factory-verified
2019 guide: SLE-1, SLE-2, SLT-1, SLT-2, Denali: S; not provided on fleet daily rental orders
- 2025–2027 Factory-verified
S on all trims
- 2015–2017, 2019, 2021–2022 Factory-verified
2015–2016: SLE, SLT: S; SL, Canyon: not offered; 2021: S on all trims; the upfitter lists name it digital audio system, S-band
- 2023–2027 Factory-verified
S on all trims; the upfitter lists name it a digital audio system, S-band
- 2004–2009 Factory-verified
- 2004–2009 Factory-verified
- 2025–2026 Factory-verified
- 2025–2026 Factory-verified
SUV guide wording: SiriusXM with 360L, trial subscription.
- 2014–2018, 2022–2026 Factory-verified
- 2025–2027 Factory-verified
- 2027 Factory-verified
Pro: O; AT4, Elevation, AT4X, Denali, Denali Ultimate: not offered
- 2003–2007 Factory-verified
- 2009 Factory-verified
- 2003–2007 Factory-verified
- 2007–2009, 2014 Factory-verified
the 2014 guides call it SiriusXM Satellite Radio
- 2015, 2018–2019 Factory-verified
not provided on fleet daily rental orders; 2015 marks: Sierra: O; SLE, SLT: included in the trim group; 2018: GM's 2018 Sierra 2500HD order guide
- 2025–2027 Factory-verified
Pro: O; SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: not offered
- 2016–2019 Factory-verified
- 2019–2020, 2022–2026 Factory-verified
the upfitter lists read "Digital audio system, S-band"
- 2016–2017 Factory-verified
SLE-1, SLE-2, SLT, Denali: S; no trial on Fleet Daily Rental orders
- 2019 Factory-verified
SLE, SLE Diesel: O; SLT, SLT Diesel, Denali: S
- 2025–2027 Factory-verified
S on all trims; the 2025 guide reads SiriusXM trial subscription; not provided on fleet daily rental orders
- 2003–2006 Factory-verified
- 2007–2009 Factory-verified
- 2016–2018 Factory-verified
2016, 2018: S on all trims; the lists read digital audio system, S-band; 2018 from GM's 2018 Yukon order guide
- 2022–2023, 2025–2027 Factory-verified
2027: S on all trims
- 2016–2017 Factory-verified
S on all trims; the lists read digital audio system, S-band
- 2022–2023, 2025–2027 Factory-verified
2027: S on all trims
This page aggregates every documented appearance of U2K in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.