Condition No. 1 For Setting DTC P1870
WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 GMC Sierra, 2002 Chevrolet Suburban, and 2002 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The PCM detects slip in the torque converter clutch and/or the 4th gear clutch pack with the TCC in an apply or locked mode. DTC P1870 sets during the second consecutive trip when one of the following conditions occurs.
The following events occur:
- The TCC slip speed is 120-550 for 10 seconds.
- All conditions for running the DTC are met for 3 occurrences.