AiYiGu 8-Way Power Seat Switch for Chevy GMC Driver Side (Left) — 2-Button 12‑Pin OEM Fit

This durable replacement switch restores full electric seat adjustability for drivers who lost recline, cushion tilt, or forward/back movement. Designed to match the factory connector and layout, the unit swaps into vehicles that originally used GM part number 12450166 and compatible cross-references. Before ordering, confirm your vehicle requires a left-side (driver) control with the 2-button + 12-pin configuration to ensure proper fit.

Which vehicles does this AiYiGu power seat switch fit?

It fits a wide range of GM trucks and SUVs built around the turn of the century. Compatible models include late-1990s through mid-2000s Silverado, Sierra, Suburban, Tahoe, Yukon, Avalanche, Escalade and H2 where the original left driver power seat used part 12450166.

• Chevy Silverado and 1500/2500/3500 variants (1999–2007)
• GMC Sierra and HD models, Tahoe and Suburban (2000–2006)
• Chevy Avalanche (2002–2006), Yukon/Yukon XL (2000–2006)
• Cadillac Escalade (2002–2006) and Hummer H2 (2003–2007)

How do I confirm this is the correct replacement part?

Check the original switch layout and connector count in your vehicle: this unit requires a left/front driver control with two buttons and a 12-pin plug. Use your vehicle’s parts reference or dealer confirmation, and verify fitment using seller tools (for example, Amazon’s Confirmed Fit) before purchase.

• Compare the switch face: two-button style matching factory shape
• Confirm the connector: exact 12-pin plug is required
• Verify left/front (driver) side application — not a passenger-side unit
• Cross-reference OEM 12450166 or listed alternative numbers

What functions will this switch restore once installed?

After installation this control returns standard electric seat movements including seatback recline, cushion tilt and fore/aft motion depending on the vehicle’s seat motor setup. It acts as the interface between your hand and the seat actuators, restoring driver-side adjustability without replacing motors.

• Recline and return of seatback angle
• Front/rear seat track adjustment where equipped
• Cushion tilt or height adjustments if the vehicle originally supported them
• Reliable mechanical feel and OEM-style operation

Are there installation tips or warnings I should know?

Installation is straightforward for someone comfortable with interior trim removal and electrical connectors, but always disconnect the battery before working on seat wiring. Note that some market switches that look similar are for the passenger right side; this AiYiGu unit only fits the front left driver side.

• Disconnect battery to avoid shorting airbag or seat systems
• Remove seat trim panels gently to access the OEM switch
• Match the two-button face and 12-pin connector before plugging in
• If unsure, consult a technician or use vehicle fitment verification

Who is this for: drivers and mechanics who need an affordable, direct-fit replacement for a failed left-side power seat control on late-1990s to mid-2000s GM trucks and SUVs. It’s ideal for owners restoring original functionality without replacing the seat motors, fleet maintenance shops, and DIYers comfortable with interior trim removal and connector swaps. AiYiGu backs the part with seller support for fitment questions and post-sale assistance.