pecas1982

well my truck has over 200,000 miles it never gave me any problems no o2 sensor or nothing but any how i changed the valve body to my 4L60e i still get the same problem 3/4 wont work so i buy a transmission from the junk yard same transmission 4L60e M30 jest like my trans the only difference is that i use my same torque convertor can it be that i'm using the same torque convertor or what because my scanner still says p1870 the code that i'm getten no other codes but that one can some please help me with this be for i go old school and use a 1994 transmission that come with the gear cable the connects to the throttle body. because online with the p1870 code it all leads to rebuilt valve body or transmission and i know it not my transmission