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Ship Direct To Repair Shop
We provide an out-the-door price, with shipping, for a replacement remanufactured 4L80E transmission direct to the repair shop.

4R75E Transmissions At Wholesale Prices
At Street Smart, we provide remanufactured transmissions shipped factory direct at wholesale prices to save you money.

Synthetic Fluid Available
We can provide Pennzoil Platinum LV Multi-Vehicle ATF Synthetic Transmission Fluid – See order page for more details.

►Six-plate direct clutch and four-plate intermediate clutch packs, standard on all models, increase durability and performance.
►Updated EPC solenoid and solenoid clips.
►New boost valve kit, pressure regulator valve, bypass converter clutch sleeve, and plunger eliminate delayed engagement, shudder, and soft shifting.
►Upgraded spiral lock snap ring and staked retainer for intermediate clutch address an OE design flaw and eliminate premature failure.
►Updated 1-2 and 2-3 accumulator pistons prevent harsh shifting and premature clutch failure.
►New overdrive servo pin sleeve installed in our servo modification process with custom designed tooling and bushings.
►Completely remanufactured pump with new line bore bushings eliminates leaks and provides superior flow and durability.
►Fully remanufactured torque converter is tested for leaks, lockup, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibility of front seal leaks, premature bushing wear, and vibration.
►2001 and newer models feature a new 3-4 capacity valve sleeve and an extra-thick zinc-coated Super Tough Plate to eliminate plate cracking and cross leaks caused by repeated stress from the 2-3 accumulator piston spring retainer.
►Police, towing, and performance packages include: eight-plate direct clutch pack, additional valve body modifications, elevated pressure regulator valve, and other upgrades to increase durability and load capacity.
► Remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality.
► Complete road simulation using a dynamometer testing program called C.A.R.S. (Computer Aided Road Simulation). Every transmission is cold and hot tested before shipment.

How Many Variations of the 4R75E?

There are many different variations (so we have over 60 different part numbers!). Each one for a different engine size (bellhousing) and varying electronic and solenoid systems for different years.

Only certain models will interchange with others, which is why we ask for your 17-digit VIN# when you order so we are 100% sure it is the matching unit for your vehicle!

The 6L80 (and similar 6L90) was introduced in late 2005 and is a fully automatic, six-speed, clutch-to-clutch, rearwheel drive, electronic-controlled transmission. The transmission consists primarily of a four-element torque converter, an integral fluid pump and converter housing, a single and double planetary gear set, friction and mechanical clutch assemblies, and a hydraulic pressurization and control system. The four-element torque converter contains a pump, a turbine, a pressure plate splined to the turbine, and a stator assembly.

The torque converter acts as a fluid coupling to smoothly transmit power from the engine to the transmission. It also hydraulically provides additional torque multiplication when required. The pressure plate, when applied, provides a mechanical “direct drive” coupling of the engine to the transmission. The planetary gear sets provide the six forward gear ratios and reverse. Changing gear ratios is fully automatic and is accomplished through the use of a Transmission Control Module (TCM) located inside the transmission. The TCM receives and monitors various electronic sensor inputs and uses this information to shift the transmission at the optimum time. It features clutch to clutch shifting, eliminating the one-way clutches used on older transmission designs.