Lock control, entry, remote entry

Years 1998–09 Models 8 Factory citations 19

Also described as Lock control, side door, electric, key and remote, activated entryLock control, side doors, electric, key and remote, activated entry

Also documented for Buick Cadillac Chevrolet GMC Hummer Oldsmobile Pontiac

Documented applications

Aura (2007–2009)

2008–2009 Factory-verified

GM's lists mark it do not use after the 2009 model year.

GM factory document — 2008 saturn aura rpo code list, p.1.
GM factory document — 2009 saturn aura rpo code list, p.1.

Ion (2003–2007)

2003–2007 Factory-verified

The 2003 through 2005 lists print AUO (letter O); the 2006 and 2007 lists print AU0, and the code is AU0.

GM factory document — 2003 saturn ion rpo code list, p.1.
GM factory document — 2005 saturn ion rpo code list, p.1.
GM factory document — 2006 saturn ion rpo code list, p.1.
GM factory document — 2007 saturn ion rpo code list, p.1.

Relay — U-body / GMT201 (2005–2007)

2005–2007 Factory-verified

GM factory document — 2005 saturn relay awd rpo code list, p.1.
GM factory document — 2006 saturn relay awd rpo code list, p.1.
GM factory document — 2007 saturn relay rpo code list, p.1.

Saturn SC — second generation (1997–2002)

1998–2002 Factory-verified

GM factory document — 1998 saturn sl1 sc1 sw1 rpo code list, p.1.
GM factory document — 2002 saturn sl1 sc1 rpo code list, p.1.

Sky (2007–2009)

2007–2009 Factory-verified

The 2009 list adds a note not to use it after the 2009 model year.

GM factory document — 2007 saturn sky rpo code list, p.1.
GM factory document — 2009 saturn sky rpo code list, p.1.

SL — Second generation (1996–2002)

1998–2002 Factory-verified

GM factory document — 1998 saturn sl rpo code list, p.1.
GM factory document — 2002 saturn sl rpo code list, p.1.

SW — S-Series second generation wagon (1996–2001)

1998–2001 Factory-verified

GM factory document — 1998 saturn sl1 sc1 sw1 rpo code list, p.1.
GM factory document — 2001 saturn sl1 sc1 sw1 rpo code list, p.1.

Vue — First generation (2002–2007)

2002–2006 Factory-verified

The 2002 to 2006 lists print AUO with a letter O; GM prints AU0 for the same wording elsewhere.

GM factory document — 2002 saturn vue awd rpo code list, p.1.
GM factory document — 2006 saturn vue awd rpo code list, p.1.

This page aggregates every documented appearance of AU0 in the Saturn reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.