truck slaming into second gear 1870 code once it gets warm

Question

truck slams into second gear after 15 or 20 minutes driving 1870 pops up after that

Answer 1

HI there

This code is for an internal component slipping on the transmission. This is usually a mechanical problem inside the transmission.

P1870 CHEVROLET - Transmission Component Slipping

Read more: https://www.autocodes.com/p1870_chevrolet.html