Trutech Logo


4L60E Shift Improvement Kit Heavy Duty Towing { 1993-2004 }

Product Desc: Trutech/Procare Parts
Product Part No: -- 4L60E19932004SK-HDT
Transmissions: -- 4L60E { 1993-2004 }
Package and Weight
Package Quantity: -- 1 ea
Shipping Weight: -- 7.00 lbs
Trutech/Procare: Performance Shift Improvement Kit Heavy Duty Towing
We realize there is a demand for a transmission calibration kit that will improve shift quality while increasing the durability and drivability of your street driven vehicle. This is not a "Shift Iit" but a calibration kit containing quality high performance transmission parts. At Trutech Performance Transmissions we include the parts in our kits that are needed to improve transmission function and as a result of better function a more performance shift feel is created.
Options: Upgrade or Add Selected Items
  • Option 1: { Upgrade To: Sonnax 2nd Gear Super Hold Servo Kit - 77911-03K }..+76.97:
  • Option 2: { Add: Sonnax Pinless Forward Accumulator Piston - 77987-01K}..+13.61:
  • Option 2: { Upgrade To: Sonnax Pinless Accumulator Piston (2 ea.) - 77998-03K }..+30.99:
  • Option 4: { Add: Sonnax Bearing Kit (SBK-G12 }..+33.47
Base Price:
Product Description
Kit Contents
  1. Corvett Large servo for a stronger 2nd gear:
  2. Sonnax 4th Super Hold Servo:
  3. Performance accumulator check valve:
  4. All necessary gaskets and seals included:
  5. Line pressure booster kits for better clutch holding power:
  6. Accumulator parts that do not require unusual modifications:
  7. Aluminum accumulator pistons:
  • Easy to follow detailed instructions:
  • Valve body removal NOT required:
  • Works with factory engineered design to provide increased durability and a performance shift feel:
If you have any transmission technical questions Contact Us By Email.
All email questions will be answered within 24 hours.
Thank you for for choosing Trutech/Procare Performance Transmissions.
Questions concerning your order call 334-470-1288.
Trutech/Procare Transmissions
406 East Park Ave
Enterprise, Alabama 36330
Email Us @:
Customer Service
1-800-762-9846 Inside USA
1-334-577-4400 Outside USA