Wiring provisions

Years 1998–09, 2014, 2016, 2025–27 Models 17 Factory citations 72

Also described as Wiring, auxiliary speaker, for upfitter connection to front door and windshield speakers (SEO)Provisions, wiring, exportWiring, auxiliary speaker (SEO)Wiring provisions (SEO)

Also documented for Buick Cadillac GMC Oldsmobile Pontiac

Documented applications

Astro — Second generation (1995–2005)

1999–2001, 2004, 2005 Factory-verified

GM factory document — 1999 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet astro 2wd rpo code list, p.1.

Avalanche — GMT900 (2007–2013)

2007–2009 Factory-verified

GM factory document — 2007 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet avalanche 2wd rpo code list, p.1.

Blazer EV (2024–2027)

2025–2027 Factory-verified

only in: Police Package

GM factory document — 2025 chevrolet blazer ev police package fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet blazer ev police package fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet blazer ev police package fleet order guide rpo codes, p.1.

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

1999–2002 Factory-verified

GM factory document — 1999 chevrolet blazer 4wd rhd 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.

Camaro — Gen 4 (1993–2002)

2001–2002 Factory-verified

GM factory document — 2001 chevrolet camaro rpo code list, p.1.
GM factory document — 2002 chevrolet camaro rpo code list, p.1.

Express — GMT600 (1996–2002)

1998–2002 Factory-verified

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

Impala — eighth generation (2000–2005)

2000–2005 Factory-verified

GM factory document — 2000 chevrolet impala rpo code list, p.1.
GM factory document — 2001 chevrolet impala rpo code list, p.1.
GM factory document — 2002 chevrolet impala rpo code list, p.1.
GM factory document — 2003 chevrolet impala rpo code list, p.1.
GM factory document — 2004 chevrolet impala rpo code list, p.1.
GM factory document — 2005 chevrolet impala rpo code list, p.1.
GM Heritage factory kit — 2001 Chevrolet Impala, p.35.
GM Heritage factory kit — 2005 Chevrolet Impala, p.26.

Impala — ninth generation (2006–2016)

2006–2009 Factory-verified

GM factory document — 2006 chevrolet impala rpo code list, p.1.
GM factory document — 2007 chevrolet impala rpo code list, p.1.
GM factory document — 2008 chevrolet impala rpo code list, p.1.
GM factory document — 2009 chevrolet impala rpo code list, p.1.

Lumina — second generation (1995–2001)

1998–1999 Factory-verified

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

Monte Carlo — fifth generation, W-body (1995–1999)

1998–1999 Factory-verified

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

Monte Carlo — sixth generation (2000–2007)

2000–2007 Factory-verified

GM factory document — 2000 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2001 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2002 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2003 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2004 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2005 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2006 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2007 chevrolet monte carlo rpo code list, p.1.

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

2000–2002 Factory-verified

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.

Suburban — GMT900 (2007–2014)

2007–2009 Factory-verified

GM factory document — 2007 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet chevy suburban 2wd rpo code list, p.1.

Tahoe — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

Trim marks in the 2014 guides: Police: O; Special Service: O.

GM factory document — 2007 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2014 chevrolet tahoe police vehicle fleet order guide wayback, p.2.
GM factory document — 2014 chevrolet tahoe special service vehicle fleet order guide wayback, p.2.
GM Heritage factory kit — 2007 Chevrolet Tahoe, p.31, p.184.

Tahoe — K2XX (2015–2020)

2016 Factory-verified

2016: Police Vehicle, Special Service: A

GM factory document — 2016 chevrolet tahoe police vehicle fleet order guide wayback, p.2.
GM factory document — 2016 chevrolet tahoe special service vehicle fleet order guide wayback, p.2.

Tahoe — T1XX (2021–2027)

2025–2027 Factory-verified

2027: police guides: O on both columns; printed by the Tahoe police package and special service guides, not by the retail and fleet guides; the police guides read auxiliary speaker wiring for upfitter connection to front door and windshield pillar

GM factory document — 2025 chevrolet new tahoe police package and special service fleet order guide, p.10.
GM factory document — 2026 chevrolet tahoe police package and special service fleet order guide, p.10.
GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.10.
GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.10.

TrailBlazer — GMT360 (2002–2009)

2003–2009 Factory-verified

GM Heritage factory kit — 2003 Chevrolet Trailblazer, p.36.
GM factory document — 2003 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet trailblazer 2wd rpo code list, p.1.

This page aggregates every documented appearance of WX7 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.