# P0101 on the 2009 GMC Sierra

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 P0101

- [10114998](https://open.wenmarpro.com/bulletins/10114998), 2017-08-15: This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set. If during diagnosis the tech has found that the Airflow Leak Equivalency Ratio or Induction System Leak Indication is above or below the specification the tech will have to carefully check for leaks in the air intake.
- [10112539](https://open.wenmarpro.com/bulletins/10112539), 2017-08-15: This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set. If during diagnosis the tech has found that the Airflow Leak Equivalency Ratio or Induction System Leak Indication is above or below the specification the tech will have to carefully check for leaks in the air intake.
- [10112168](https://open.wenmarpro.com/bulletins/10112168), 2017-08-15: This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set. If during diagnosis the tech has found that the Airflow Leak Equivalency Ratio or Induction System Leak Indication is above or below the specification the tech will have to carefully check for leaks in the air intake.
- [10034364](https://open.wenmarpro.com/bulletins/10034364), 2010-11-08: CHEVROLET/GMC: SNOW OR ICE INGESTION INTO AIR CLEANER ELEMENT, MALFUNCTION INDICATOR LAMP \(MIL\) ILLUMINATED, ENGINE POWER IS REDUCED MESSAGE DISPLAYED, DTC P0101 SET \(PERFORM REPAIR AS OUTLINED\). \*PE
- [10032889](https://open.wenmarpro.com/bulletins/10032889), 2010-06-08: GMC/CHEVROLET: DTC P0101 WITH NON GM AIR FILTER. MAY ENCOUNTER CONCERN OF REDUCED POWER AND SES LIGHT ON. DIAGNOSTICS MAY REVEAL MAF \(MASS AIR FLOW\) SENSOR DTC P0101. IF DIAGNOSTICS WERE INCONCLUSIVE ITS POSSIBLE DTC P0101 IS SETTING DUE TO A NON GM AIR FILTER. NON GM AIR FILTERS HAVE SHOWN A SLIGHTLY HIGHER THAN NORMAL MAF READING. \*PE