Heater, engine block

Years 1989, 1998–04 Models 11 Factory citations 38

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Also described as Engine block heater

Also documented for Buick Cadillac Chevrolet GMC Hummer Pontiac Saturn

Documented applications

Achieva — N-body (1992–1998)

1998 Factory-verified

shared N-body code; Chevrolet Malibu kit.

GM factory document — 1998 oldsmobile achieva rpo code list, p.1.
GM Heritage factory kit — 1998 Chevrolet Malibu, p.6.

Alero — N-body (1999–2004)

1999–2004 Factory-verified

GM factory document — 1999 oldsmobile alero rpo code list, p.1.
GM factory document — 2000 oldsmobile alero rpo code list, p.1.
GM factory document — 2001 oldsmobile alero rpo code list, p.1.
GM factory document — 2002 oldsmobile alero rpo code list, p.1.
GM factory document — 2003 oldsmobile alero rpo code list, p.1.
GM factory document — 2004 oldsmobile alero rpo code list, p.1.

Aurora — G-body (1995–1999)

1998–1999 Factory-verified

GM factory document — 1998 oldsmobile aurora rpo code list, p.1.
GM factory document — 1999 oldsmobile aurora rpo code list, p.1.

Aurora — G-body (2001–2003)

2001–2003 Factory-verified

GM factory document — 2001 oldsmobile aurora rpo code list, p.1.
GM factory document — 2002 oldsmobile aurora rpo code list, p.1.
GM factory document — 2003 oldsmobile aurora rpo code list, p.1.

Bravada — GMT330 (1996–2001)

1998–2001 Factory-verified

1998–1999 lists read engine coolant heater

GM factory document — 1998 oldsmobile bravada rpo code list, p.1.
GM factory document — 2000 oldsmobile bravada rpo code list, p.1.
GM factory document — 2001 oldsmobile bravada rpo code list, p.1.

Bravada — GMT360 (2002–2004)

2002–2004 Factory-verified

GM factory document — 2002 oldsmobile bravada rpo code list, p.1.
GM factory document — 2003 oldsmobile bravada rpo code list, p.1.
GM factory document — 2004 oldsmobile bravada rpo code list, p.1.

Cutlass Ciera — A-body (1982–1996)

1989 Single-source

the 1989 order guide lists it as an optional heater; shared A-body code; cited from the Chevrolet Celebrity kits; no Ciera source names it, so the row rests on the kit pages alone

GM Heritage factory kit — 1989 Chevrolet Celebrity, p.10.

Cutlass — N-body (1997–1999)

1998–1999 Factory-verified

shared N-body code; Chevrolet Malibu kit; the 1998 list prints K05 twice ("Engine Block Heater", "Heater, Eng Blk"); the 1999 list prints KO5 (letter O).

GM factory document — 1998 oldsmobile cutlass rpo code list, p.1.
GM factory document — 1999 oldsmobile cutlass rpo code list, p.1.
GM Heritage factory kit — 1998 Chevrolet Malibu, p.6.
GM Heritage factory kit — 1999 Chevrolet Malibu, p.27.

Eighty Eight (LSS) — H-body (1992–1999)

1998–1999 Factory-verified

GM factory document — 1998 oldsmobile eighty eight rpo code list, p.1.
GM factory document — 1999 oldsmobile eighty eight rpo code list, p.1.

Intrigue — W-body (1998–2002)

1998–2002 Factory-verified

GM factory document — 1998 oldsmobile intrigue rpo code list, p.1.
GM factory document — 1999 oldsmobile intrigue rpo code list, p.1.
GM factory document — 2000 oldsmobile intrigue rpo code list, p.1.
GM factory document — 2001 oldsmobile intrigue rpo code list, p.1.
GM factory document — 2002 oldsmobile intrigue rpo code list, p.1.

Silhouette — U-body second generation (1997–2004)

1998–2004 Factory-verified

GM factory document — 1998 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 1999 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 2000 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 2001 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 2002 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 2003 oldsmobile silhouette ext rpo code list, p.1.
GM factory document — 2004 oldsmobile silhouette ext rpo code list, p.1.

This page aggregates every documented appearance of K05 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.