1996 K2500 Suburban ( Torque Converter )

[wulk025]

5/5/11 Ok so im having this problem with the torque converter. Ive had it replace 3 times now and every time i get it replace it goes out with in 200miles. It losses the over drive every time and a code saying p1870 (no torque converter lock) And also this is a new transmission also instaled on the suburban Replaced old trans at 144,000 miles. Also it has the 454 motor and 4l80e trans. Please Help!!!!!!!!!!!!!!!!!!


5/6/11 Ok so new development. My wife goes and get's in the Suburban this morning to take it to the trans shop and none of the gears work no reverse, 1st, 2nd, 3rd, or 4th....... This is driving me and the Trans shop nuts.

[j cAT]

Originally Posted by wulk025

5/5/11 Ok so im having this problem with the torque converter. Ive had it replace 3 times now and every time i get it replace it goes out with in 200miles. It losses the over drive every time and a code saying p1870 (no torque converter lock) And also this is a new transmission also instaled on the suburban Replaced old trans at 144,000 miles. Also it has the 454 motor and 4l80e trans. Please Help!!!!!!!!!!!!!!!!!!


5/6/11 Ok so new development. My wife goes and get's in the Suburban this morning to take it to the trans shop and none of the gears work no reverse, 1st, 2nd, 3rd, or 4th....... This is driving me and the Trans shop nuts.

explain what NEW IS ! new to vehicle ? new to ever being used in any vehicle ?

what was the original transmission failure at 144,ooomiles ?

[wulk025]

Originally Posted by j cAT

explain what NEW IS ! new to vehicle ? new to ever being used in any vehicle ?

what was the original transmission failure at 144,ooomiles ?

I bought a new trans. not used. So New as in never been used. The old trans finaly lost 1st gear after driving it for years with a bad firts gear and i decided to replace it with a new trans. Sence replacing the trans it keeps eating up torque converters.

[j cAT]

Originally Posted by wulk025

I bought a new trans. not used. So New as in never been used. The old trans finaly lost 1st gear after driving it for years with a bad firts gear and i decided to replace it with a new trans. Sence replacing the trans it keeps eating up torque converters.

debris in the radiator tranny cooler portion can contaiminate the new transmission / torque converter...also those lines.

the wiring to the transmission may have problems as well..

surprising how a new transmission can be failing in 200 miles with the contaminated radiator/lines...

who did you buy this NEW transmission from ? who built it ?

the old transmission lost first gear only , this could be the solenoid ...

more reports are stating that the use of chinese clone parts are causing many engine /transmission failures ...

[___Brandon]

Watch out for a pinched cooling line from the tranny swap. Maybe a smashed wire or something.