'03 Tahoe 5.3l Flex Dtc Code

[bailey66]

I just picked up 2 DTC codes of P0101 and P0300 and am wondering if I should replace my MAF sensor or not. I would like to know before I drop the cash if it needs replaced. I am figuring the P0300 code is caused by the P0101 code but not sure. I cleaned the MAF sensor with CRC cleaner and cleared codes but it came right back. Could bad gas cause the P0300? Any help would be appreciated.

[bailey66]

well i sure dont know what to make of this site but i went and took my tahoe to the shop and found out i have a bad O2 sensor pre cat and the left side as well as a plugged cat. i am posting this info so it may help others who actualy read this site. i thought this was a site for help but have noticed its like most other places for benchtop mechanics to shoot the breeze. many people have read this thread and no replies so i guess i wasnt wrong on my assumptions of the site.