Cadillac ATS 2016 Automatic Transmission 8-Speed 8L45 2.5L RWD Remanufactured

Bolt this remanufactured Cadillac ATS 8L45 transmission 12726T directly behind your 2.5L LCV engine for instant shift restoration. Engineered for 2016 rear-wheel-drive Alpha chassis, this eight-speed gearbox permanently cures torque converter lockup shudder. You must perform a heated cooler line flush and complete an electronic transmission adaptive relearn before road testing to protect friction surfaces.

Shot-peened A380 die-cast aluminum forms the longitudinal casing, inspected with fluorescent penetrant for hairline bellhousing stress fractures. Four planetary gear sets transfer four-cylinder engine torque through five multi-disc clutch packs with zero tooth spalling. Rebuilders install updated Sonnax pressure regulator valve sleeves, Kolene salt-bath nitrided steel plates, and Raybestos GPZ friction discs. Precision stator support bushings prevent internal fluid leakage. The dry transmission weighs 178 lbs and ships in a 36 by 24 by 22 inch crate.

Key Features of GM 8L45

Fleet mechanics buy GM 8L45 transmission units to stop harsh 1-2 shift clunks without paying steep dealership parts pricing. This commercial remanufactured transmission assembly provides positive ratio control for Cadillac ATS transmission replacement projects.

- Re-machined pressure regulator valve bores stop hydraulic fluid leakage inside the main casting.
- CNC-machined valve body passages hold 22 inHg on precision vacuum test benches.
- Updated torque converter lockup clutch friction lining cures driveline shudder under cruise conditions.
- Balanced remanufactured torque converter eliminates vibration and shields front pump drive gears.
- Raybestos GPZ friction plates resist thermal glaze during sustained high-speed highway travel.
- Precision stator support bushings maintain steady hydraulic line pressure to forward clutch circuits.
- Pre-calibrated variable force solenoids deliver rapid 20 ms actuation across all eight gear steps.

SuperFlow Bench Dynamometer Telemetry Data

Technicians test every remanufactured 8L45 gearbox on an automated SuperFlow transmission dynamometer under full working temperatures. Pressure transducers verify main line pressure holding 185 PSI in Drive and 250 PSI in Reverse at 1600 RPM. Variable-bleed shift solenoids execute fluid routing within 20 ms under computerized diagnostic commands. Re-machined valve body channels sustain 22 inHg vacuum during static bench drawdown tests. Automated testing validates zero torque converter clutch slip at cruising speed. Fluid temperature sensors confirm stable thermal equilibrium at 175°F without internal bypass leaks.

Field Installation Directives Negative Filter

Push and rotate the torque converter inward until you verify three distinct clicks into the front pump drive lugs. Check engine alignment dowels for burrs prior to pulling the bellhousing flat against the block. Do not buy this factory unit for turbocharged track builds, nitrous applications, or drift cars.

- Flush chassis radiator transmission cooler lines with heated solvent to clear trapped metal dust.
- Fill with approved Mobil 1 Synthetic LV ATF HP fluid at 40°C pan temperature.
- Execute a transmission adaptive fast learn sequence using a diagnostic scanner before driving.

Nationwide Warranty Freight Manifest Inclusions

This remanufactured assembly carries a nationwide 3-Year/100,000-Mile warranty covering mechanical breakages and hydraulic valve body control failures. The reinforced wooden crate contains a balanced torque converter, technician installation checklist, dynamometer test pass printout, cooler flush verification card, and a pre-paid core return freight bill for rapid transit.