TH200-4R Reprogramming Kit for GM 200-4R 1981-1990 200-4R-HD2

This 200-4R-HD2 reprogramming kit is designed for GM TH200-4R, 200-4R, 200R4, and 2004R four-speed automatic transmissions. It provides street and strip calibration options, with selectable components that allow shift quality to be tuned from firm street performance to aggressive high-performance operation.

Performance Features

• New dual-feed third clutch circuit designed to increase third clutch holding torque by up to 200 percent.

• Billet second servo piston designed to increase band holding torque.

• Calibration components for multiple 200-4R valve body types.

• Suitable for street and strip performance applications.

Installation Notes

This is a heavy-duty, high-performance reprogramming kit intended for professional installation by a technician familiar with the GM 200-4R transmission. Follow the supplied instructions, confirm transmission identification and valve body configuration, and verify TV cable adjustment after service.

Use the specified automatic transmission fluid and add Lubegard ATF Protectant during the fluid refill to help support smooth operation after service.

Fitment

Fits GM 200-4R / TH200-4R / 200R4 / 2004R transmissions, 1981-1990. Confirm your transmission model and application before ordering, as vehicle fitment can vary by configuration.