Cadillac CT6 2016-2018 Automatic Transmission 8-Speed 8L45 2.0L RWD Remanufactured

Violent converter shudder and harsh 1-2 shift clunks indicate severe valve body bore wear inside your luxury sedan. Replace that fatigued gearbox with this remanufactured Cadillac CT6 8L45 RWD transmission built for 2016 to 2018 2.0L LTG turbo models. Technicians must perform a heated cooler flush and run an adaptive relearn right after bolting the unit.

Shot-peened A380 die-cast aluminum forms the longitudinal casing, inspected with fluorescent dye for stress cracks along bellhousing mounting flanges. Four planetary gear carriers transfer turbocharged four-cylinder torque without carrier deflection or gear tooth spalling. Rebuilders install updated Sonnax valve sleeves, Kolene salt-bath nitrided steel plates, and Raybestos GPZ friction discs. Precision stator bushings eliminate internal hydraulic cross-leaks. The dry transmission weighs 178 lbs and ships inside a 36 by 24 by 22 inch crate.

Key Features of GM 8L45

Independent repair shops buy GM 8L45 transmissions to stop harsh shift flares without paying inflated dealership parts pricing. This commercial remanufactured transmission assembly provides positive rear-wheel-drive torque distribution for Cadillac CT6 transmission replacement projects.

- CNC-reamed pressure regulator valve bores stop line pressure drop that causes shift slip.
- Valve body circuits sustain 22 inHg vacuum on calibrated precision test stands.
- Updated multi-disc torque converter clutch eliminates low-speed driveline shudder under highway cruise loads.
- Balanced remanufactured torque converter stops drivetrain vibration and shields front pump drive gears.
- Raybestos GPZ friction clutch plates resist thermal heat breakdown during heavy turbocharged acceleration.
- Hardened output shaft splines handle full 2.0L engine output without tooth strip damage.
- Pre-calibrated control solenoids deliver rapid 20 ms actuation across all eight forward ratios.

AIDCO Bench Dynamometer Pressure Metrics

Every completed 8L45 rear-wheel-drive unit undergoes automated testing on an AIDCO dynamometer through cold start and elevated operating temperatures. Pressure gauges record line pressure holding 185 PSI in Drive and 250 PSI in Reverse at 1600 RPM. Electronic shift solenoids switch hydraulic passages within 20 ms under computer diagnostics. Valve body hydraulic circuits sustain 21 inHg vacuum during static bench drawdown tests. The dyno computer logs zero converter clutch slip at cruising speed. Fluid temperatures hold steady at 175°F.

Field Installation Protocols Negative Filter

Slide the torque converter onto the input splines until you verify three distinct clicks. Measure pump hub clearance with a depth gauge before tightening bellhousing bolts to the block. Do not buy this factory unit for supercharged track racers, drift builds, or nitrous swaps.

- Flush chassis radiator transmission cooler lines with heated solvent to remove suspended metal dust.
- Fill with approved Mobil 1 Synthetic LV ATF HP fluid at 40°C pan temperature.
- Reset transmission shift adaptation data using an advanced scan tool before highway test driving.

Nationwide Warranty Freight Manifest Inclusions

Your transmission purchase brings a nationwide 3-Year/100,000-Mile warranty covering mechanical breakdown and hydraulic valve body defects. The reinforced wooden crate contains a balanced torque converter, technician installation checklist, dynamometer test pass report, cooler flush tracking card, and a pre-paid core return freight bill for prompt return transit.