Liftgate, manual

Years 2004–07, 2009, 2025–27 Models 5 Factory citations 13

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Also described as Body equipment, lift gate, manualBody equipment, liftgate (manual)

Also documented for Chevrolet GMC Oldsmobile Saturn

Documented applications

Enclave — Lambda / GMT967 (2008–2017)

2009 Factory-verified

GM factory document — 2009 buick enclave rpo code list, p.1.

Encore GX — VSS-F (2020–2027)

2025–2027 Factory-verified

Preferred, Sport Touring, Avenir: S

GM factory document — 2025 buick encore gx fleet order guide, p.6.
GM factory document — 2026 buick encore gx fleet order guide, p.6.
GM factory document — 2027 buick encore gx fleet order guide, p.6.

Envision — E2XX (2021–2027)

2025–2027 Factory-verified

2027: Preferred, Sport Touring: S

GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide, p.6.

Envista — VSS-F (2024–2027)

2025–2026 Factory-verified

Preferred, Sport Touring: S

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.5.
GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.5.

Rainier — GMT360 (2004–2007)

2004–2007 Factory-verified

the 2004–2005 lists print "lift gate"

GM factory document — 2004 buick rainier 2wd rpo code list, p.1.
GM factory document — 2007 buick rainier rpo code list, p.1.

This page aggregates every documented appearance of TB4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.