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2001 GMC Sierra CODE PO101

Tiny
CHRIS HENRY
  • MEMBER
  • 2001 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 77,565 MILES
HAS LOSS OF POWER AND ENGINE CODE PO101
Monday, February 23rd, 2009 AT 3:40 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem

Need to inspect your Mass Airflow (MAF) sensor. Suspect if may be faulty. This will usually cause poor power, poor idle and/or poor fuel mileage.

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Tuesday, February 24th, 2009 AT 1:50 AM
Tiny
CHRIS HENRY
  • MEMBER
  • 2 POSTS
Thanks but the truck has a new m.A.F. Sensor and map sensor
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Tuesday, February 24th, 2009 AT 8:12 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Try unplugging it and see if it makes the vehicle run better. If it does then there is still a problem with it somewhere. Either wiring or something is dirty and not letting the sensor do its job correctly.
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Tuesday, February 24th, 2009 AT 8:34 PM

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