4L60E - 4L65E - 4L70E New Fitzall A74741CB TCC Valve P1870 Code Fix For Your 2004-on* Transmission With CAN Bus Control Systems. This Is A Brand New Fitzall A74741CB is Made In USA. Valve To Fix Worn Valve Body With P1870 Code In 4L60E - 4L65E - 4L70E Series Automatic Transmissions 2004-on* *Please Note: Fitzall Has Made The Applications Of This Valve To Only Fit 2004-on 4L60E -4L65E - 4L70E (16 Transmission Pan Bolts) Transmissions That Use The OEM CAN Bus Control Systems. Note: Will Only Work On Later Models 2004-on W/ CAN Bus Controls Systems Computer