# P0401 on the 2007 Chevrolet Express

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.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0401

- [10030730](https://open.wenmarpro.com/bulletins/10030730), 2009-11-24: CHEVROLET/GMC: TURBO VANE POSITION SENSOR WIRE CHAFE; REDUCED POWER AND/OR THE SES/MIL LIGHT ON. INITIAL DIAGNOSIS MAY REVEAL ONE OR A COMBINATION OF TURBO DTCS P003A, P0234, P0401, P0402, P0652, P0698, P0699, P2563. IF ONE OR COMBINATION OF DTCS HAVE BEEN FOUND, INSPECT FOR A WIRE CHAFE ON THE VPS \(VANE POSITION SENSOR\). \*PE
- [10026108](https://open.wenmarpro.com/bulletins/10026108), 2008-09-30: GMC: EGR LOW FLOW DTC P0401. VEHICLES THAT ARE EQUIPPED WITH THE 6.6L DIESEL ENGINE RPO CODE LM. \*PE
- [10021106](https://open.wenmarpro.com/bulletins/10021106), 2007-03-05: LBZ, LLY, ENGINE WITH ROUGH IDLE, POOR PERFORMANCE, BLACK/WHITE EXHAUST SMOKE, MIL/SES LIGHT ON AND ONE OR MORE OF THE FOLLOWING DTC'S P003A, P060B, P0230, P0403, P0401, P0606, P2146, P2149, P2152, P2155. \(REPROGRAM ECM AND REPLACE EGR MOTOR OR EGR VALVE. \*KB UPDATED 04\-27\-07. \*KB UPDATED. \*PE