# P1870 on the 1996 Oldsmobile Bravada

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

- [634815](https://open.wenmarpro.com/bulletins/634815), 2002-10-09: SOME CUSTOMERS MAY COMMENT ON A HARSH 1\-2 UPSHIFT AND THE CHECK ENGINE LIGHT OR SERVICE ENGINE SOON INDICATOR IS ILLUMINATED AND DIAGNOSTIC TROUBLE CODE P1870 SET. \*TT
- [627839](https://open.wenmarpro.com/bulletins/627839), 2002-02-25: INFORMATION REGARDING HARSH 1\-2 UPSHIFT, SERVICE ENGINE SOON, MALFUNCTION INDICATOR LAMP, OR CEL ILLUMINATED, DIAGNOSTIC TROUBLE CODE P1870 SET. \(1996\-2000 CHEVROLET AND GMC LIGHT DUTY TRUCK MODELS\) \*YH
- [52584](https://open.wenmarpro.com/bulletins/52584), 1999-12-20: AUTOMATIC TRANSMISSION 1\-2 AND/OR 2\-3 UPSHIFT SLIP/FLARE, NO 3RD OR 4TH GEAR, DTC P1870, LAUNCH SHUDDER \(REVISE VCM WIRING\). \*AK