# P1221 on the 2002 GMC Envoy

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 P1221

- [10011821](https://open.wenmarpro.com/bulletins/10011821), 2005-02-01: REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND OR P1271 STORED IN THE POWERTRAIN CONTROL MODULE. \*EH
- [10010867](https://open.wenmarpro.com/bulletins/10010867), 2004-12-15: REDUCED ENGINE POWER MESSAGE AND/OR CHECK ENGINE LIGHT WITH ANY COMBINATION OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES: P0107, P0112, P0452, P1120, P1220, P1221, P1271, P1275, P1280, P1481, P1515, P1540, P1633, P1635, P1639 AND P1682 POWERTRAIN CONTROL MODULE REPEAT. \*TT
- [10010105](https://open.wenmarpro.com/bulletins/10010105), 2004-11-04: REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND/OR P1271 STORED IN THE POWER CONTROL MODULE. \*SC