Sure Cure, Transmission Reconditioning Kit, 4L80E, 4L85E, 91-UP,GM
Sure Cure Kits combine the best products into one box, offering rebuilders a convenient and cost-effective way to address common transmission problems. These kits simplify ordering, stocking and estimating job costs, and include easy-to-read, step-by-step instructions that cover the inspection and repair of the most critical areas of the unit, and even a reference list of rebuilding specifications.
This 4L80-E transmission reconditioning kit includes the following Sonnax parts and addresses these problems:
Boost valve kit (34200-01K)- High line pressure, broken hard parts
Wide stator bushing (34016-W)- No lockup; codes 68, 1870
TCC and PR valve end plugs (34994-11, -13, -14 & 34200-05)- Low pressure caused by end plug leaks
AFL valve kit (34200-16K) Wrong gear starts, solenoid codes, band failure U.S. Pat. No. 6,634,377 & no 4th gear
TCC regulator valve kit (34994-01K)- Converter shudder; codes 68, 1870
Shift valve spring kit (34994-02K)- 2nd gear starts, 3-1 neutral, no 3rd or 4th
Torlon???? checkballs (10000-08)- Circuit leaks
Spring pins (34997-07 & -09)- Convenient replacement pins for multiple locations
No-walk case bushing (34006-SP)- Case bushing walks out, delayed forward engagement
Endplay washer (34301-078)- Excessive unit endplay
Endplay shim (34500-Z)- Forward clutch & sealing ring failures, excessive endplay
Required Tools:
77754-TL Tool kit for AFL valve