GSUSQ44L80/85 US Shift Quick4 Controller, GM 4L80/85E w/ 13-Pin Main Connector

Name: GSUSQ44L80/85 US Shift Quick4 Controller, GM 4L80/85E w/ 13-Pin Main Connector
Brand: GEARSTAR PERFORMANCE TRANSMISSIONS
SKU: 052-GSUSQ44L80/8
Price: 850.00 USD
Availability: InStock

^$850⁰⁰

Ships on 09/17/2026

Lowest Price Guarantee

GM 4L80/85E w/ 13-Pin Main Connector

Gearstar Performance GSUSQ44L80/85 Features:
US Shift Quick 4 Gen 2 standalone transmission controller. This is required for any electronically controlled transmission. This is designed for the GM 4L80/85E transmission with a 13-pin main harness connector. The US Shift controller package will include the computer, wiring harness, custom wire loom, and will come preloaded with a tune designed for the transmission. Please specify if you are using a carburetor or an EFI system.
If using a Holley 4150 series carb, the throttle position sensor part number 510-534-202 will need to be purchased separately.
Currently supporting these popular transmissions:

GM 4L60E, 4L65E, 4L70E (2008 and earlier) 13 pin main harness connector

GM 4L80E and 4L85E

Ford AOD-E, 4R70W 1998-2003 wiring harness with the 12 pin MLPS switch.

Ford E4OD and 4R100

The Quick 4 is a powerful, fully featured, easy-to-use, stand-alone transmission control system. It enables the use of modern, electronic four-speed transmissions on a wide variety of vehicles that lack OEM capabilities, such as classic cars, trucks, or motorhomes. It can also be used to enhance a modern vehicle’s performance by taking over control from the OEM computer, allowing the user to directly adjust the shift points, firmness, torque converter engagement, and much more. The Quick 4 stand-alone transmission control system does not require the use of a laptop for tuning. Tuning can be done through the user interface with a soft touch dial and LCD screen. There is free downloadable tuning software to fine-tune your transmission with a Windows-based PC.