4L70E Performance Transmission 2WD 700HP GM Chevy LS 2009-2013 17-Pin

REMANUFACTURED 4L70E PERFORMANCE TRANSMISSION — 2WD — RATED TO 700 HP — 2009-2013 LS — 17-PIN

A fully remanufactured, performance-built 4L70E for 2009-2013 GM 2WD LS applications with the 17-pin case connector. Built to fix the weak points of the 4L60E/4L65E/4L70E family and hold up to serious street, tow and performance use.

DOES YOUR TRANSMISSION SHOW THESE SYMPTOMS?

• Slipping or flare in 3rd or 4th gear
• No Reverse or no 4th gear from a broken or spun sun shell
• Burnt 3-4 clutches / burnt fluid smell
• Harsh, delayed or soft engagement
• Overheating under load or while towing
• Input drum or sprag breakage under power

WHAT MAKES THIS A PERFORMANCE BUILD

• All-new frictions and steels with a seven-clutch GPZ® high-performance 3-4 stackup designed for extreme stress and heat
• Input drum reinforcement kit with new billet overrun apply piston to help prevent breakage
• Redesigned heavy-duty sun shell that redistributes load off the roller bearings
• New heavy-duty front and rear sprags and new 5-pinion front and rear planetary gearsets
• New wide red 2-4 band paired with a new reverse input drum
• Heavy-duty 3rd shift valve that helps extend forward sprag and clutch life
• Rebuilt front pump — new rotor, vane and slide kit, .500 boost valve, high-rev vane rings for elevated RPM, and a new pressure regulator valve that raises pressure for firmer shifts
• Redesigned 3-4 piston return springs that help stabilize 3-4 apply at high RPM
• Rebuilt valve body with heavy-duty shift kit — full lever-controlled downshifts 3rd through 1st, and manual 1st or 2nd held at any speed or RPM
• Corvette servo upgrade with billet 4th-apply piston and cover
• Complete bushing kit with wide rear sun gear bushing
• All-new electronics — wiring harness and internal PRNDL switch
• New filter and a complete overhaul kit (seals, gaskets, rings)

FITMENT — READ BEFORE YOU BUY

This unit fits 2009-2013 GM 2WD LS applications that use a 4-speed transmission with a 17-pin case connector (internal mode switch + input speed sensor). Count the pins on your case connector and confirm you have a 4-speed before ordering.

• Chevrolet Express 1500 / 2500 / 3500 — 2009-2013 — 5.3L / 6.0L, 2WD, 4-speed w/ 17-pin
• GMC Savana 1500 / 2500 / 3500 — 2009-2013 — 5.3L / 6.0L, 2WD, 4-speed w/ 17-pin
• Chevrolet Silverado 1500 — 2009-2013 — 2WD base V8 configs that retained the 4-speed; verify not 6L80
• GMC Sierra 1500 — 2009-2013 — 2WD base V8 configs that retained the 4-speed; verify not 6L80

WILL NOT FIT

• 4WD or AWD vehicles (different tailhousing / output)
• Trucks equipped with the 6L80 or 6L90 six-speed automatic
• Cores with 13-pin or 15-pin connectors — this is a 17-pin unit

TO COMPLETE INSTALLATION

You will also need a new torque converter matched to your build, fresh ATF, and — for standalone or swap use — a compatible controller or PCM tune.

ITEM SPECIFICS

• Transmission Model: 4L70E (4-speed automatic overdrive)
• Drivetrain: 2WD / RWD
• Connector: 17-pin (internal mode switch + input speed sensor)
• Power Rating: Built to 700 HP
• Condition: Remanufactured / performance-built
• Engine Family: GM LS-series V8

PROTECT YOUR BUILD

Add Lubegard Platinum Universal ATF Protectant with your fresh fill to help control heat, reduce shudder and extend clutch life from the first mile.