HVAC system, heater, outside air, with fan

Years 1964–66, 1989, 1998–05 Models 6 Factory citations 13

Also described as Thrift-Air (economy) heater & defrosterHeater, deletes air conditioningHeater with outside-air ventilation and fan (no air conditioning)HVAC, heater only

Also documented for Buick Oldsmobile Pontiac Saturn

Documented applications

C/K Trucks

1964–66 Factory-verified

GM Heritage factory kit — 1964 Chevrolet Truck, p.15.
GM Heritage factory kit — 1966 Chevrolet Truck, p.24.

Caprice — third generation, B-body (1983–1990)

1989 Factory-verified

only in: sedan (1BL69), fleet; requires LB4

GM Heritage factory kit — 1989 Chevrolet Caprice, p.60.

Cavalier — third generation (1995–2005)

1998–2005 Factory-verified

GM factory document — 1998 chevrolet cavalier rpo code list, p.1.
GM factory document — 2005 chevrolet cavalier rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Cavalier, p.43.
GM Heritage factory kit — 2005 Chevrolet Cavalier, p.22.

Malibu — Fifth generation (1997–2005)

1998 Factory-verified

platform-list code; the Malibu 1997–1999 kit order guides do not show it.

GM factory document — 1998 chevrolet malibu rpo code list, p.1.

Metro — second generation (1998–2001)

1999–2001 Factory-verified

GM factory document — 1999 chevrolet metro rpo code list, p.1.
GM factory document — 2000 chevrolet metro rpo code list, p.1.
GM factory document — 2001 chevrolet metro rpo code list, p.1.

Prizm — third generation (1998–2002)

1998–1999 Factory-verified

GM factory document — 1998 chevrolet prizm rpo code list, p.1.
GM factory document — 1999 chevrolet prizm rpo code list, p.1.

This page aggregates every documented appearance of C41 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.