P1870 on the 2001 Chevrolet Suburban
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. Its meaning is in the manufacturer's service information.
| 3047 | 2004-11-05. Service bulletin. 00-01 4L80-E AUTOMATIC TRANSMISSION MAY EXPERIENCE A HARSH TCC APPLY AND/OR DIAGNOSTIC TROUBLE CODE P1870 OR P074. *TC |
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| 3047 | 2004-09-28. Service bulletin. HARSH TCC APPLY AND OR A DIAGNOSTIC TROUBLE CODE P1870. 4L80E AUTOMATIC TRANSMISSION. *TT |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.