Sonnax

4L60E 4L65E 4L70E Oversized 3-4 Shift Valve Kit by Sonnax (Requires Tooling)

4L60E 4L65E 4L70E Oversized 3-4 Shift Valve Kit by Sonnax (Requires Tooling) Part No. 77754-42K Tooling:  F-77754-TL42  VB-FIX In GM 4L60-E, 4L65-E abd 4L70-E units, wear at the...

4L60E 4L65E 4L70E Oversized Forward & Reverse Abuse Valve Kit by Sonnax (Ream Required)

4L60E 4L65E 4L70E Oversized Forward & Reverse Abuse Valve Kit by Sonnax (Ream Required) Part No. 77754-58K Tooling:  F-77754-TL58  VB-FIX Fits in either of two locations...

4L60E 4L65E 4L70E Oversized Low Overrun Valve Kit by Sonnax

4L60E 4L65E 4L70E Oversized Low Overrun Valve Kit by Sonnax Part No. 77754-62K Tooling:  F-77754-TL62  VB-FIX The low overrun valve directs line pressure to the reverse input and...

4L60E 4L65E 4L70E Performance Pressure Regulator Spring (1993-UP) Sonnax

4L60E 4L65E 4L70E High Performance Pressure Regulator Spring Sonnax Part Number: 77917-10 1993-UP Model Years This high-quality, heavy-duty pressure regulator valve spring 77917-10 from Sonnax fits...

4L60E 4L65E 4L70E Pinless Forward Accumulator Piston Kit by Sonnax

4L60E/4L65E/4L70E Pinless Forward Accumulator Piston Kit Sonnax Part Number: 77987-01K In GM 4L60-E, 4L65-E and 4L70-E units it is common for the plastic forward accumulator piston to wear or crack...

4L60E 4L65E 4L70E Rear Stator HD Bushing by Sonnax 77002BT-01

4L60, 4L60-E, 4L65-E, 4L70-E Rear Stator Support Bushing Sonnax Part No. 77002BT-01 The original GM 4L60, 4L60-E, 4L65-E, 4L70-E rear stator bushing comes in narrow and wide...

4L60E 4L65E 4L70E Replacement Seal Kit ONLY For Sonnax Super Hold Servo

4L60, 4L60-E, 4L65-E, 4L70-E Replacement Seal Kit for Sonnax Super Hold Servo

4L60E 4L65E 4L70E Sonnax Performance Pack

Performance PackPart No. HP-4L60E-01 Fits '94-later units. The Sonnax Performance Pack for GM 4L60-E, 4L65-E and 4L70-E transmissions is a must-have for any heavy-duty vehicle and the very...

4L60E 4L65E 4L70E TCC Apply Valve Kit (NON-PWM Only)

Vehicles with GM 200-4R, 4L60 and 4L60-E transmissions have numerous converter overheat lockup complaints. These include no lockup or lockup immediately after 2nd Gear when fluid warms up, caused by...

4L60E 4L65E 4L70E TCC Apply Valve Kit (PWM Only)

Vehicles with GM 4L60-E, 4L65-E and 4L70-E transmissions have numerous converter overheat lockup complaints. These include no lockup or lockup immediately after 2nd Gear when fluid warms up, caused...

4L60E 4L80E EPC Solenoid Harness Adapter

4L60-E, 4L65-E, 4L70-E, 4L80-E, 4L85-E EPC Solenoid Harness AdapterPart No. 34435-01K For use with early-style (’92-'02) EPC solenoid in late-style (’03-later)...

4L60E 4L80E Sonnax Sure-Cure Tool Kit

4L60-E, 4L65-E, 4L70-E, 4L80-E, 4L85-E Tool KitPart No. 77754-TL Tool kit for 77754-09K, 34200-16K, SC-4L80E and SC-4L60E...

4L60E 4L80E Transmission Shift Cable Mount Bracket

4L60-E, 4L80-E, 4L85-E Shift Cable Mount BracketPart No. 34913-01 Transmission cases made in 1994 and 1995 have neutral safety switch mounting holes but do not have the top mount...

4L60E 700R4 4L65E 4L70E TH200-4R HD Pump Slide Pivot Pin (5-Pack) Sonnax

700R4 4L60E 4L65E 4L70E TH200-4R Transmission Pump Slide Pivot Pin Sonnax Part Number: 65797 Pack of 5 Vehicles with 4L60 & E and THM 200-4R transmissions can have low or high line pressure due...

4L60E Oversized Pressure Regulator Valve (SONNAX) (1993-UP)

TOOLING REQUIRED: 77917-TL  or 77917-TLC  A worn OE pressure regulator valve can be detected in two ways. The first is a dynamometer test that reveals low line pressure during boost...

4L60E|4L65E Sonnax Boost Valve Kit "Factory Style" .490'' | 77898E-3K

Early pump design, .490" Dia., Factory style sleeve, no o-rings Dia.: 0.490" Vehicles with a 4L60-E and 4L65-E transmission frequently have poor line rise, which can result in 3-4 clutch, 2-4...

4L60E|4L65E|4L70E Sonnax 3-2 Control Valve Spring 77754-23

GM 4L60E/4L65E/4L70E 3-2 Control Valve Spring Sonnax Part No. 77754-23 The 3-2 control valve spring in late-model 4L60-E and 4L65-E valve bodies often breaks, and can cause a 3-2 bind and/or...

4L80E #7 Low/Reverse Checkball Seat (1995-UP) 5-Pack

Vehicles with GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the #7 low/Reverse checkball seat location. This issue is caused by normal movement of the checkball and slight movement of...

4L80E 1-2 & 2-3 Shift Valve Spring Kit - HD

In 4th Gear, signal A oil force must overpower the 1-2 shift valve spring and opposing signal B pressure in GM 4L80-E and 4L85-E transmissions. If the 1-2 shift valve does not remain fully stroked,...

4L80E 3rd & Reverse Checkball Sleeve Kit (1995-UP)

4L80-E, 4L85-E 3rd & Reverse Checkball Sleeve KitPart No. 34200-47K Fits units '95-later. Vehicles with '95-later GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the Reverse...