|
|
03-28-2014
1999 Buick Regal GS turbocharged. Built transmission has a fresh rebuild, has a brand new 3500 TC, and I have tested the solenoids and wiring and seems all good. Slips in 3rd pretty bad.
Any ideas? I will try a new PCM this weekend when I get my offboard back.
03-28-2014
A different computer shouldn't change this.When the PCM detects a continuous open, short to ground or short to power in the TCC PWM solenoid valve circuit, then DTC P1860 sets. DTC P1860 is a type B DTC.
03-28-2014
It might not but a PCM does go bad once in a while. Running out of things to check and I have a spare PCM sitting around. It's a new solenoid and I tested it, I had all the wires unbound and checked them for shorts and tested from PCM to the trans. I have changed the TCC duty cycle to max 100 and min 55.Originally Posted by Fivefingerdeathpunch
Is there anything hydraulic that can cause this?
03-29-2014
That I don't know.
Have you tried changing the TCC settings back and seeing if the issue went away? I'm just throwing out guess here, I've never changed major transmission settings when tuning a 3800.
| « Previous Thread | Next Thread » |
| Bookmarks |
Bookmarks |
