- 1970s Confirmed
Also described as Body insulationQuiet Sound Group (acoustic insulation)Quiet sound groupInsulation package, acousticalAcoustical insulation package (quiet sound group)Package, acoustical insulation and luggage compartment decorAcoustic package, enhancedAcoustical insulation packagePackage, acoustical insulation
Also documented for BuickCadillacGMCOldsmobilePontiacSaturn
Documented applications
- 1980 Factory-verifiedGM Heritage factory kit — 1980 Chevrolet Impala, p.69.
- 1974–1975 Confirmed
- 2002–2006 Factory-verifiedGM Heritage factory kit — 2002 Chevrolet Avalanche, p.52.GM Heritage factory kit — 2003 Chevrolet Avalanche, p.34.GM Heritage factory kit — 2004 Chevrolet Avalanche, p.32.GM Heritage factory kit — 2005 Chevrolet Avalanche, p.31.
- 2007–2009 Factory-verified
- 1982–1986 Factory-verifiedGM Heritage factory kit — 1982 Chevrolet Camaro, p.30.GM Heritage factory kit — 1983 Chevrolet Camaro, p.26.GM Heritage factory kit — 1984 Chevrolet Camaro, p.7.GM Heritage factory kit — 1985 Chevrolet Camaro, p.22.GM Heritage factory kit — 1986 Chevrolet Camaro, p.22.
- 1986–1988 Factory-verified
standard on the Caprice Classic and Brougham; the 1988 sheet prints BSI
GM Heritage factory kit — 1986 Chevrolet Caprice, p.38.GM Heritage factory kit — 1987 Chevrolet Caprice, p.41.GM Heritage factory kit — 1988 Chevrolet Caprice, p.65.
- 1984 Factory-verified
only in: hatchback coupe, hatchback sedan; the 1985 page prints the code as 8S1, which is not an accepted reading, so 1985 is left out
GM Heritage factory kit — 1984 Chevrolet Citation, p.32.
- 2008–2009 Factory-verified
- 2014, 2016 Factory-verified
all but 1SE: S
- 1983 Factory-verified
required with LT6 and LF9
GM Heritage factory kit — 1983 Chevrolet Malibu, p.21.GM Heritage factory kit — 1983 Chevrolet Malibu, p.23.
- 2001, 2004–2007 Factory-verifiedGM Heritage factory kit — 2001 Chevrolet Silverado, p.54.GM Heritage factory kit — 2007 Chevrolet Silverado, p.54.
- 2001–2006 Factory-verifiedGM Heritage factory kit — 2001 Chevrolet Suburban, p.49.GM Heritage factory kit — 2002 Chevrolet Suburban, p.35.GM Heritage factory kit — 2003 Chevrolet Suburban, p.37.GM Heritage factory kit — 2004 Chevrolet Suburban, p.39.
- 2007–2009 Factory-verifiedGM Heritage factory kit — 2007 Chevrolet Suburban, p.32.
- 2001–2006 Factory-verifiedGM Heritage factory kit — 2001 Chevrolet Tahoe, p.42.GM Heritage factory kit — 2002 Chevrolet Tahoe, p.28.GM Heritage factory kit — 2003 Chevrolet Tahoe, p.30.GM Heritage factory kit — 2004 Chevrolet Tahoe, p.31.
- 2007–2009 Factory-verifiedGM Heritage factory kit — 2007 Chevrolet Tahoe, p.27.
- 2009, 2015 Factory-verified
the 2015 guide reads acoustical insulation package.
- 2000–2005 Factory-verified
This page aggregates every documented appearance of BS1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.