🔧 GM OEM Power Seat Lumbar / Adjuster Switch Knob — 2022 GMC Acadia | GM# 84494391 | Whisper Beige | General Motors | Used

Used OEM power seat adjustment switch removed from a 2022 GMC Acadia (VIN: 1GKKNXLSXNZ153086). Features a large round dome-shaped knob in Whisper Beige (color code 4KB) mounted on a black rectangular housing with snap-clip mounting tabs. Two wiring connector ports on the back with blade terminals. Manufactured by General Motors for GM. Condition: Used, good condition.

⚙️ Key Features

• Power Seat Lumbar / Back Adjuster Switch — Round dome-style knob controls lumbar or seat back position adjustment (4-way or 2-way depending on seat configuration)
• Whisper Beige / Shale Knob — Color code 4KB, matches 2022 Acadia Denali/SLT Whisper Beige interior
• Two Connector Ports — Dual blade-terminal connector slots on housing back for wiring harness integration
• Snap-Clip Housing — Rectangular black housing with side mounting tabs for seat back panel integration
• Manufacturer: General Motors

📐 Specifications

• GM Part Number: 84494391
• Production Reference: 12090310028
• Knob Color: Whisper Beige / Shale — interior color code 4KB
• Connectors: 2 blade-terminal connector ports
• Manufacturer: General Motors
• Origin: General Motors OEM
• Donor Vehicle: 2022 GMC Acadia, VIN 1GKKNXLSXNZ153086
• Condition: Used OEM — good condition

✅ Vehicle Fitment

• 2022 GMC Acadia — Front seat with power lumbar / seat back adjuster and Whisper Beige interior — confirmed donor vehicle
• Likely also fits: 2017–2022 GMC Acadia SLT / AT4 / Denali with power lumbar seat and Shale / Whisper Beige interior (color code 4KB)
• May also fit: 2018–2022 Buick Enclave / Cadillac XT5 with matching power lumbar seat and Shale interior — verify part number before ordering
• ⚠️ This part number is not widely cataloged online. Verify GM# 84494391 against your existing switch and confirm knob color and connector count match your application before purchasing.

🔧 Installation Notes

• Located on the outboard side of the seat back (backrest) bolster panel
• Disconnect wiring connectors, release mounting clips from panel, swap switch
• Plug-and-play — no programming required
• Knob color is interior-specific — confirm your interior color code before ordering

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