vertical99
TYF Newbie
- Joined
- Jan 21, 2019
- Posts
- 11
- Reaction score
- 0
I have a 2003 tahoe z71 with a 5.3l motor not flex. I got these 2 codes (p0172 and p0175) so i figured it was the MAF sensor. I read a article that said if you unplug the sensor and the truck stalls the MAF sensor is ok, if the truck keeps running then your MAF sensor is bad. So i unplugged the sensor and the truck kept running so I bought a new MAF sensor and installed it . I started the truck and unplugged the sensor once again and the truck kept running with the new MAF sensor installed. should i replace the wiring harness to the sensor or is there a fuse that could be bad. i do not have any stalling issues and the truck starts great everyday I get a check engine light and fuel economy is bad. Thanks in advance AL