19434978 | Genuine GM® 6-Speed TCM Transmission Control Module T14, A50

SKU: 19434978 MPN: 19434978

Drive smarter and maintain seamless transmission response with the Genuine 6-Speed TCM for Chevrolet Silverado and GMC Sierra. Brand: GM. Part number: 19434978. Supports 6.0L and 6.6L 8-cylinder engines for consistent power delivery.

$959.00
No Core Charge
3 in stock

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Product Description

Product Name 6-Speed Transmission Control Module Product Name 6-Speed Transmission Control Module
Condition Remanufactured Condition Remanufactured
Brand GM® Brand GM®
Part Number 19434978 Part Number 19434978
Vehicle Compatibility
Chevrolet Silverado (2009-2015) Chevrolet Silverado (2009-2015)
GMC Sierra (2009-2015) GMC Sierra (2009-2015)
Engine Compatibility
Engine 8 Cyl 6.0L Engine 8 Cyl 6.0L
Engine 8 Cyl 6.6L Engine 8 Cyl 6.6L
Module Compatibility
Model T14, A50 Model T14, A50
Common Diagnostic Trouble Codes
U0101 Lost communication with TCM U0101 Lost communication with TCM
U0100 Lost communication with ECM/PCM U0100 Lost communication with ECM/PCM
P2669 Computer circuit malfunction / Actuator Supply Voltage "B" Circuit Low P2669 Computer circuit malfunction / Actuator Supply Voltage "B" Circuit Low
P0700 Transmission Control System fault P0700 Transmission Control System fault
P0827 Up and Down Shift Switch Circuit Low P0827 Up and Down Shift Switch Circuit Low
TCM Not powering on / No communication TCM Not powering on / No communication

Useful Information

Description and Purpose:

This Genuine GM remanufactured 6-Speed Transmission Control Module, listed under Part number: 19434978, fits 8-cylinder Chevrolet Silverado and GMC Sierra (2009–2015). It optimizes T14 and A50 automatic transmission performance, maintaining precise shift timing and consistent power delivery for everyday and heavy-duty driving.

Why Replacement is Important:

Ensures transmission shifts correctly and reduces wear on gears and clutches. It protects the drivetrain from unexpected failures.

Impact on Vehicle Performance:

Delivers stable and smooth gear engagement while supporting overall vehicle reliability.

Manufacturer Information:

General Motors® stands for engineering excellence, offering components built to maintain optimal vehicle functionality and longevity.

Tags & Category: Transmission Control Module, 6-Speed TCM, GM T14 A50, Automatic Transmission Module, Powertrain Control Unit, 6L90 TCM, Chevrolet Silverado Transmission Module, GMC Sierra Transmission Controller, OEM GM TCM, Shift Control Unit, Electronic Transmission ECU

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 19434978