Heating and defrost system, reinforced, 1.5 kW electric

Years 1982–89, 1998–08, 2022–23, 2025–27 Models 6 Factory citations 38

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Also described as GVW rating, 4400 poundsGVW rating, 4,400 lbsPayload capacity, 1500 lb

Also documented for Cadillac GMC Oldsmobile

Documented applications

Blazer — S-10 second generation (1995–2005)

1998–2004 Factory-verified

GM factory document — 1998 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet blazer 4wd rpo code list, p.1.

Colorado — GMT355 (2004–2012)

2005–2008 Factory-verified

GM factory document — 2005 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet colorado pickup 2wd rpo code list, p.1.

S-10 pickup — First generation (1982–1993)

1982–1989 Factory-verified

1982 from the trailering requirement remark; 1983–1985 and 1987 from the power team axle lines (w/C3A)

GM Heritage factory kit — 1982 Chevrolet S 10, p.10.
GM Heritage factory kit — 1983 Chevrolet S 10, p.37.
GM Heritage factory kit — 1984 Chevrolet S 10, p.8.
GM Heritage factory kit — 1985 Chevrolet S 10, p.16.
GM Heritage factory kit — 1986 Chevrolet S 10, p.8.
GM Heritage factory kit — 1987 Chevrolet S 10, p.16.
GM Heritage factory kit — 1988 Chevrolet S 10, p.52.
GM Heritage factory kit — 1989 Chevrolet S 10, p.45.

S-10 pickup — Second generation (1994–2004)

1998–2004 Factory-verified

GM factory document — 1998 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet s10 pickup 4wd rpo code list, p.1.

Suburban — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: LT, RST, Z71, Premier, High Country: O

GM factory document — 2025 chevrolet new suburban fleet order guide, p.35.
GM factory document — 2026 chevrolet suburban fleet order guide, p.39.
GM factory document — 2027 chevrolet suburban fleet order guide, p.36.
GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.10.
GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.10.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.6.

Tahoe — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: LT, RST, Z71, Premier, High Country: O

GM factory document — 2025 chevrolet new tahoe retail and fleet fleet order guide, p.46.
GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.51.
GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.47.
GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.10.
GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.10.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.6.

This page aggregates every documented appearance of C3A in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.