OEM CertifiedFactory Sealed OEM
Key Diagram & Connector Pinout Callouts
Motor 1 (Horizontal)Central Transverse
Drives dual rack and pinions for 240mm forward/aft travel
Motor 2 (Front Tilt)Front Pivot Arm
Adjusts front seat thigh cushion height up/down
Motor 3 (Rear Riser)Rear Bellcrank
Lifts and lowers rear pelvic cushion height
Memory Sensor PackPin 5 & 6
Pulse feedback counters sent directly to BCM/Memory Seat Module
Primary OEM Part #84820845
Inventory Available 6 Ready to Ship
GM Chevrolet Silverado / Tahoe 8-Way Power Seat Track Assembly with Motors & Memory
Manufacturer: General Motors OEM / Brose • SKU: ST-GM-84820845-8WAY
Standard Dealership Market Price:$650.00
Direct Buy Now Price:$489.00
Save 25% ($161)
Quantity:
1
(Max 6 in batch) Same-day Dispatch
12-Month / 12,000-Mile Direct Replacement Warranty
OEM Interchanges & Cross Reference
Mechanics can cross-reference with these stamped casing and manufacturer numbers:
84820845 (Primary)846872848418042523377521Dorman 747-019
Product Overview & Technical Description
Factory brand new GM OEM driver's side 8-way power seat base track frame assembly. Ships complete with horizontal forward/reverse drive motor, front tilt motor, rear height motor, optical hall-effect position sensors for memory seat presets, and full wiring pigtail connector. Constructed from heat-treated stamping grade high-tensile steel.
Key Engineering Features:
- Brand new sealed crate assembly — replaces stripped plastic gears and jammed slides
- Includes 3 pre-greased, sealed IP54 fractional horsepower permanent magnet DC motors
- Factory wiring harness with memory module connector for plug-and-play GM seating systems
- Tested to FMVSS 207/210 crashworthiness seat anchorage standards
Guaranteed Vehicle Fitment (2014–2026)
Supported MakesChevrolet, GMC, Cadillac
Model Years Covered2015 – 2024
Eligible ModelsSilverado 1500/2500 • Sierra 1500/2500 • Tahoe • Suburban • Yukon • Escalade
Hardware & Electrical Specs
Operating Voltage:12V DC (Operating 10.5V - 15.0V)
Pin Terminal Count:16 Pins
Terminal Plating:Heavy silver-plated high-amperage terminals
Protocols / Bus:Direct 12V bidirectional H-bridge polarity & Memory feedback potentiometers
PositionFront Left (Driver Side)
Adjustment8-Way: Fore/Aft, Front Height Tilt, Rear Height, Lumbar bracket compatible
Drive MechanismAcme threaded steel lead-screws with nylon vibration isolation bushings
Steel GaugeHeavy 11-gauge stamped structural steel
Boxed Weight26.5 lbs
Box Dimensions28.0 x 21.5 x 8.0 in
VIN Flashing / ProgrammingNot Required (Direct Plug-in)