- 1-2 Harsh
- 2-3 Shift feel poor
- 3-4 Clutch failure
- Burnt clutches & bands
- Code 1870
- Erratic line pressure
- Falls out of lockup when hot
- Low line rise
- No lockup
- Poor shift quality
- Pump noise
- Reduced 3-4 clutch life
- Rotor fracture
- TCC slip
The parts in this Sure Cure kit repair and restore key areas most prone to TCC-related transmission problems and other issues affecting shift quality.
The Sure Cure® Kit
- Actuator Feed Limit Valve Kit
- Pinless 1-2 or 3-4 Accumulator Piston Kit
- Check Valve Kit
- 1-2 Accumulator Spring
- Checkball (8)
- Forward & Reverse Abuse Bore Plug (2)
- 3-4 Relay Valve End Plug
- Oversized Boost Valve & Spacer .490"
- TCC Apply Valve Kit
- Oversized Pressure Regulator Valve
- Pump Slide Pivot Pin
- D-Ring Servo Seals (5)
- Shim .010"
- Shim .015"
- TCC Isolator & Regulator Valve Kit
Sonnax Sure Cure kit SC-4L60E is a comprehensive reconditioning package for GM 4L60-E PWM units featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints as well as other transmission problems. The high-quality Sonnax parts in each Sure Cure kit repair worn areas and protect the transmission against future damage. Plus, each kit comes with easy-to-read, step-by-step installation guide that covers the inspection and repair of the most critical areas of the valve body.
- Restore shift quality and reduce comebacks
- Repairs biggest trouble areas to reduce comebacks
- Includes step-by-step instructions for comprehensive valve/pump body restoration
- Get everything you need for restoring troublesome units in one place, at one cost
This kit is fully compatible with 95-later 4L60-E units with PWM/EC3 (electronically controlled capacity clutch) control. These can be identified by the 13-pin case connector, PWM/TCC solenoid and PWM pump (five solenoids). All components in this kit are compatible 9394 non-PWM units EXCEPT the TCC apply valve 77805E-K installed in the pump. These units can be identified by the 12-pin case connector, only having a 3-2 solenoid in valve body (four solenoids).
- Patent No. 6,619,323
- Patent No. 6,634,377
- Patent No. 6,899,211
- Patent No. 6,990,966
- Patent No. 7,104,273
Sonnax Sure Cure® Kits
Comprehensive Kit for Big Problems You Don't Want Back
Knowing exactly what parts to replace in troublesome transmissions is an ever-increasing challenge, but Sonnax Sure Cure kits solve this problem for you. Each kit is a comprehensive reconditioning package featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance.
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