Package, option 11

Years 1997–98, 2000, 2003, 2005–06, 2014 Models 6 Factory citations 9

Also described as Preferred equipment group 1SLEquipment group 1SL, Diesel, automatic transmissionEquipment group: Z71 Off-RoadEquipment group

Also documented for Buick Cadillac GMC

Documented applications

Astro — Second generation (1995–2005)

2000 Factory-verified

GM factory document — 2000 chevrolet astro 2wd rpo code list, p.1.

Cavalier — third generation (1995–2005)

1997–1998 Factory-verified

Z24 coupe 1997; Z24 convertible 1998

GM Heritage factory kit — 1997 Chevrolet Cavalier, p.98.
GM Heritage factory kit — 1998 Chevrolet Cavalier, p.45.

Cruze — first generation (2011–2016)

2014 Factory-verified

model 1PY69, 2.0L turbo diesel with 6 speed automatic; GM 2014 Fleet Car & Truck Guide; new for 2014 (GM Authority 2014 RPO changes, which it calls GM's official change list)

GM factory document — 2014 gm fleet car truck guide copy xr793, p.30.

Silverado — GMT800 (1999–2007)

2005 Factory-verified

GM Heritage factory kit — 2005 Chevrolet Silverado 1500, p.174.

Tahoe — GMT800 (2000–2006)

2003, 2005–2006 Factory-verified

The order guides print it as a column heading and in the note "Equipment group 1SL available on CK15706 Models" (2005 and 2006: C*15706); the 2003 color-and-trim page ties it to the Z71 decor ("Only colors available on 1SL Z71"), and no decor name is printed with it otherwise

GM Heritage factory kit — 2003 Chevrolet Tahoe, p.111, p.138.
GM Heritage factory kit — 2005 Chevrolet Tahoe, p.109.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.107.

Venture — U-body minivan (1997–2005)

1997 Factory-verified

equipment group; the kit order guides name it in their column headings or in option requirements, and the Venture service lists do not print it; GM's lists give the code this option number for other vehicles.

GM Heritage factory kit — 1997 Chevrolet Venture, p.50.

This page aggregates every documented appearance of 1SL in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.