1. Rhagymadrodd
This manual provides essential information for the installation and proper use of the TRANSGO SK 4L60E Shift Kit. This kit is designed to enhance the performance and durability of 4L60E, 4L65E, 4L70E, and 4L75E automatic transmissions manufactured between 1993 and 2007, excluding hybrid units. The kit addresses common transmission issues by improving shift quality and reducing wear on critical components, such as the PWM valve, which helps save worn valve bodies.
2. Gwybodaeth Diogelwch
Proper installation of this shift kit requires specialized knowledge and tools. It is highly recommended that installation be performed by a qualified transmission technician. Failure to follow safety precautions and installation instructions can result in personal injury, damage to the vehicle, or improper transmission operation.
- Always disconnect the vehicle's battery before beginning any work on the transmission.
- Gwisgwch offer amddiffynnol personol priodol, gan gynnwys sbectol diogelwch a menig.
- Ensure the vehicle is securely supported on jack stands or a lift.
- Allow the transmission fluid to cool before draining to prevent burns.
- Dispose of old transmission fluid and parts according to local regulations.
3. Cynnwys Kit
The TRANSGO SK 4L60E Shift Kit includes a variety of precision-engineered components necessary for the upgrade. Please verify that all parts listed in the physical kit's detailed instructions are present before beginning installation.

Image: The TRANSGO SK 4L60E Shift Kit, showing the product packaging and various internal components such as springs, seals, and valves. These parts are designed to improve transmission shift characteristics.
Mae cydrannau nodweddiadol yn cynnwys:
- Various springs for valve body modifications.
- Replacement seals and gaskets.
- Specialized valves and spacers.
- Drill bits (if required for specific modifications).
- Detailed, step-by-step instructions specific to the kit.
4. Setup and Pre-Installation
Before commencing the installation, ensure you have a clean workspace and all necessary tools. Refer to your vehicle's service manual for specific procedures related to transmission removal and valve body access.
Required Tools (General)
- Set soced a wrench
- Wrench torque
- Drain pan for transmission fluid
- Glanhau carpiau siop
- New transmission fluid and filter (recommended)
- Small hand tools (screwdrivers, picks)
5. Cyfarwyddiadau Gosod
The TRANSGO SK 4L60E Shift Kit includes comprehensive, detailed instructions specific to its components and modifications. It is crucial to follow those instructions precisely. Dyma drosolwg cyffredinolview and should not replace the kit's specific guide.
- Paratoi Cerbyd: Safely lift and secure the vehicle. Drain the transmission fluid and remove the transmission pan.
- Valve Body Removal: Carefully disconnect electrical connectors and remove the transmission filter. Unbolt and lower the valve body assembly from the transmission case.
- Valve Body Disassembly: On a clean workbench, disassemble the valve body according to the kit's instructions. This typically involves removing separator plates, various valves, and springs.
- Component Replacement/Modification: Install the new TRANSGO components (springs, valves, seals) into the valve body. Perform any drilling or modifications to the separator plate as specified in the kit's instructions. Ensure all components are correctly oriented and seated.
- Valve Body Reassembly: Reassemble the valve body, ensuring all bolts are torqued to the manufacturer's specifications.
- Ailosod: Reinstall the modified valve body into the transmission case. Install a new transmission filter and gasket, then reattach the transmission pan.
- Fluid Refill: Refill the transmission with the recommended type and amount of new transmission fluid.
6. Ystyriaethau Gweithredu
After installation, the transmission's shift characteristics will change. You may notice firmer, more positive shifts. This is a normal and intended outcome of the shift kit, designed to improve durability and performance. A short break-in period may be necessary for the transmission to adapt to the new components.
7. cynnal
Regular transmission maintenance is crucial for the longevity of your transmission and the shift kit. Adhere to your vehicle manufacturer's recommended service intervals for transmission fluid and filter changes. Use only the specified type of transmission fluid.
8. Datrys Problemau
If you experience unexpected transmission behavior after installing the shift kit, consider the following common issues:
- Harsh or Delayed Shifts: Double-check that all components were installed correctly and that the specified modifications (e.g., drill sizes) were followed precisely. Incorrect spring placement or valve seating can cause these issues.
- Gollyngiadau: Ensure the transmission pan gasket is properly seated and all bolts are torqued to specification. Inspect for any damage to the pan or case.
- No Change in Shift Feel: Verify that all new components were installed and that any necessary modifications to the separator plate were completed.
For persistent issues, consult a professional transmission technician or contact TRANSGO technical support.
9. manylebau
- Model Cynnyrch: SK 4L60E
- Trosglwyddiadau Cydnaws: 4L60E, 4L65E, 4L70E, 4L75E
- Compatible Years: 1993-2007 (Excluding Hybrid Units)
- Rhif Rhan Gwneuthurwr: SK 4L60E
- OEM Part Number (Cross-reference): T74165E
- Pwysau Eitem: Tua 12 owns (0.34 kg)
- Dimensiynau Pecyn: Tua 6.14 x 6.1 x 2.24 modfedd (15.6 x 15.5 x 5.7 cm)
10. Gwarant a Chefnogaeth
TRANSGO products are manufactured to high standards. For specific warranty information regarding your SK 4L60E Shift Kit, please refer to the documentation included with your purchase or visit the official TRANSGO website. For technical assistance or support, contact TRANSGO customer service directly.





