2006 gmc Sierra sle 5.3 engine 4x4. Have changed wires and plugs, mass control sensor, 4 o2sensor. Still reads lean on rt and lt bank code po 174,po300,po101


Asked by Oct 06, 2013 at 06:05 PM

Question type: Maintenance & Repair

1 Answer


P0174 is usually a vacuum leak downstream of the MAF sensor. P0300 is a misfire, and P0101 means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. After you replaced the sensors, did you remove the negative battery cable for 20mins and or clear the codes?

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions


Search Maintenance & Repair Questions

Maintenance & Repair Experts

#1 Tom Demyan
Tom Demyan
Reputation 174,760
#2 dandyoun
Reputation 93,450
#3 tennisshoes
Reputation 76,010
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.