- 2016–2019 Factory-verified
column heading of every guide; 2017–2019: not available with a fleet or government order type (the headings print 1SV1 with that footnote, so those years are cited from the color and trim pages, which print 1SV); the NICB manuals print a Cascada (1SV) series in 2016 and a 1SV series in 2019; Wikipedia names the base trim 1SV
Also described as Trim group, Cascada baseTrim group, Enclave (base)Equipment group 1SV, EncoreEquipment group 1SV, Envision (base)Equipment group 1SV, base LaCrosseEquipment group 1SV, RegalPackage, option 20Trim group, Verano base
Also documented for CadillacChevroletGMC
Documented applications
- 2018 Factory-verified
only in: FWD; the fleet guide page prints the heading as 1SV1, with its footnote 1 (not available with fleet or government order types), so that page is not cited for the code; 2018: GM order guide via GM Authority
- 2018–2019 Factory-verified
only in: FWD; the guides footnote it as not for fleet or government orders
- 2018–2020 Factory-verified
only in: front-wheel drive (4XR26); the trim headings print 1SV1, footnote 1: not available with fleet or government order types; the color and trim pages print 1SV bare; GM Authority's 2017 page lists a base Envision without the code; 2020: GM Authority's Espresso Metallic article
- 2017–2019 Factory-verified
- 2015 Factory-verified
FWD; the 2015 guide marks it not for fleet or government orders; NICB 2016 p.40 shows 1SV in the 2015 column only; added mid-2015 (GM Authority 2016 changes)
- 2018–2019 Factory-verified
Sportback model 4ZU68 FWD; TourX model 4ZU35 AWD
- 2016 Factory-verified
FWD 2.4L only; not available with a fleet or government order type; the column headings print 1SV1 (footnote 1), the color and trim page the bare code
- 2015, 2017 Single-source
the NICB 2016 manual lists a Regal 1SV in its 2015 column (p.41); the NICB 2017 manual lists a Regal 1SV (p.42); single-source: the NICB VIN manuals (T4) only
- 2007 Factory-verified
- 2016 Factory-verified
2016: page 1 model heading "1SV, 1SD, 1SG & 1SH", corroborated by the NICB VIN manual (2016 p.41); pages 2 to 5 print the code only with a footnote digit attached (1SV1)
- 2015, 2017 Single-source
2015 and 2017 rest only on the NICB VIN manuals (2015 p.38, 2017 p.42); no GM list for those years
This page aggregates every documented appearance of 1SV in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.