OEM CertifiedFactory Sealed OEM
Key Diagram & Connector Pinout Callouts
Motor DrivePins 1-4
H-bridge to encoder + shift motor
PositionPins 8-10
Encoder pot feedback to module
Primary OEM Part #19418827
Inventory Available 6 Ready to Ship
GM Silverado / Sierra 4WD Transfer Case Control Module (TCCM)
Manufacturer: General Motors OEM / ACDelco • SKU: 4WD-GM-19418827
Standard Dealership Market Price:$420.00
Direct Buy Now Price:$299.00
Save 29% ($121)
Quantity:
1
(Max 6 in batch) Same-day Dispatch
12-Month ACDelco Warranty
OEM Interchanges & Cross Reference
Mechanics can cross-reference with these stamped casing and manufacturer numbers:
19418827 (Primary)194188278417408319258460ACDelco 19209872
Product Overview & Technical Description
Factory brand-new GM Transfer Case Control Module (TCCM) for AutoTrak 2-speed transfer cases. Drives the encoder motor and shift motor, reads position feedback, and reports 4WD status over GMLAN. Resolves C0387 encoder range, C0569 disabled, and Service 4WD message faults.
Key Engineering Features:
- Resolves C0387/C0391 encoder motor range and Service 4WD faults
- Drives AutoTrak encoder + shift motors
- Virgin flash for TIS2Web
- Genuine ACDelco packaging
Guaranteed Vehicle Fitment (2014–2026)
Supported MakesChevrolet, GMC
Model Years Covered2015 – 2020
Eligible ModelsSilverado 1500 • Sierra 1500 • Tahoe • Suburban • Yukon
Hardware & Electrical Specs
Operating Voltage:12V DC
Pin Terminal Count:18 Pins
Terminal Plating:Tin power / gold signal
Protocols / Bus:GMLAN, ISO 14229
SystemAutoTrak 2-speed 4WD
NetworkGMLAN HS-CAN
Boxed Weight2 lbs
Box Dimensions7.5 x 5.5 x 2.2 in
VIN Flashing / ProgrammingRequired via Pass-Thru