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Discussion Starter · #1 · (Edited)
For about the last year now I've been having trouble with the P1011 code mass air flow sensor. I have replaced the air filter, cleaned the filter box out of debris, and even replaced the mass air flow sensor with a GM oem sensor. The code still persists. My CEL will go on and off randomly. Engine responsiveness has been pretty poor in 1st & 2nd, and especially bad if I have the a/c on. And now recently over the last few days I have begun to have some idle issues where it almost feels like it's about to stall out. I've searched endlessly on this, but I don't see much about the gen2 with this, most of the P1011 codes have been on gen1 or are gen2 with multiple codes thrown. Whereas mine is only the P1011. When I got home today I screen recorded some realtime guages from torque that I've uploaded to YouTube showing my RPM's dropping into the 600's at idle then spiking up to 800. Any ideas where my issue can be, it's driving me nuts now.

Video:
 
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