# P1870 on the 2003 Hummer H2

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name P1870

- [10009370](https://open.wenmarpro.com/bulletins/10009370), 2004-09-27: THE ENGINE DOES NOT STALL WHEN PERFORMING A P1870 DIAGNOSTIC TEST WITH THE TECH 2 SCAN TOOL OR WHEN COMMANDING THE TORQUE CONVERTER CLUTCH ENABLE SOLENOID ON APPLICATIONS THAT DO NOT HAVE THE P1870 DIAGNOSTIC TEST LISTED. 4L60E OR 4L65E TRANSMISSIONS. \*TT
- [628845](https://open.wenmarpro.com/bulletins/628845), 2002-03-21: DIAGNOSTIC INFORMATION ON DIAGNOSTIC TROUBLE CODE P1870, TRANSMISSION COMPONENT SLIPPING FOR 2000 \- 2002 PASSENGER CARS AND LIGHT DUTY TRUCKS. \*TT UPDATE TO INCLUDE 2004 MODELS. \*TT UPDATED \*EH