- May 29, 2013
- 25
Anyone have experience with DTC P1870? Just had the transmission replaced with a rebuilt one from western transmission. Oh, 4L60E, 96 K1500. It now has the DTC P1870 code and hard 1-2 shifts after it has warmed up. Not sure if it is going into lock up either. I have done some reading but wanted to know if anyone had personal experience with this.