Cadillac CTS Automatic Transmission 6L50 Tag 12750T Remanufactured

Bolt this remanufactured Cadillac CTS 6L50 transmission 12750T directly behind your 3.6L direct-injection engine to eliminate 1-2-3-4 clutch wave plate fractures. Engineered for Sigma II platform chassis, this six-speed gearbox restores positive gear selection across all acceleration curves. You must flush cooler lines with heated solvent and reset transmission adaptives before road testing to safeguard internal clutches.

Shot-peened A380 die-cast aluminum forms the longitudinal casing, inspected with fluorescent penetrant for hairline bellhousing stress cracks. Hardened planetary carrier gears transfer 304 horsepower without tooth spalling or spline wear. Rebuilders install updated heavy-gauge 1-2-3-4 clutch wave plates, reamed pressure regulator sleeves, Kolene steel plates, and Raybestos GPZ friction packs. Replaced pump bushings maintain stable line pressure. The dry unit weighs 205 lbs and ships inside a 38 by 24 by 22 inch crate.

Key Features of GM 6L50

Technicians buy GM 6L50 transmissions to stop harsh shift clunks and broken wave plates without paying steep local dealership pricing. This commercial remanufactured transmission assembly ensures positive torque multiplication and durable line pressure control for Cadillac CTS transmission replacement projects.

- Hardened 1-2-3-4 clutch wave plate prevents fatigue failure and clutch drum destruction.
- Upgraded pressure regulator valve sleeve stops hydraulic pressure spikes inside the valve body.
- Vacuum testing proves 22 inHg retention across all reamed spool valve bores.
- Balanced torque converter stops drivetrain shudder while protecting internal pump gears from wear.
- Raybestos GPZ high-energy frictions resist high heat glaze during demanding highway driving.
- Hardened output shaft splines handle full throttle acceleration without tooth twist or stripping.
- Pre-tested internal TEHCM solenoid module ensures precise 20 ms line pressure modulation in all gears.

SuperFlow Dynamometer Load Test Telemetry

Technicians test every remanufactured 6L50 transmission on a SuperFlow dynamometer through cold start and high temperature cycles. Telemetry confirms main line pressure reading 180 PSI in Drive and 240 PSI in Reverse at 1600 RPM. Electronic pressure control solenoids react within 20 ms with zero mechanical spool sticking. Calibrated vacuum gauges register 22 inHg across all hydraulic control passages. Automated testing logs zero lockup clutch slip under simulated high-load road conditions. Fluid temperature sensors confirm normal thermal equilibrium without internal fluid bypass leaks.

Field Assembly Rules Application Limits

Seat the torque converter inward with three distinct clicks until the hub drops well past the bellhousing mating surface. Never force the transmission against the engine block using bellhousing bolts. Do not buy this factory-calibrated unit for CTS-V supercharged track racers or custom engine swaps.

- Flush cooler lines with hot pressurized solvent to clear metallic clutch debris from previous failures.
- Fill with approved Dexron VI fluid through the fill port at 40°C pan temperature.
- Perform an electronic adaptation reset procedure using a professional scan tool before road testing.

Warranty Terms Shipping Contents Details

This remanufactured assembly includes a nationwide 3-Year/100,000-Mile warranty covering mechanical breakages and hydraulic valve body failures. The reinforced wooden crate contains a balanced torque converter, step-by-step installation instructions, dynamometer test pass printout, cooler flush verification card, and a pre-paid core return freight bill for easy transport.