2008 GMC Sierra 1500 5.3l vortec AFM-P0301

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09-28-2022, 11:29 PM

#11

CathedralCub

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Quote:

Originally Posted by JGln

It'* also been throwing a lot of false codes, like B2aaa, could this possibly be an ECM issue? I didn't clear the 0171 and 4 codes, checked it again after start up and false codes showed this time.

B codes are body codes. It looks like there'* something else going on besides engine stuff.

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10-02-2022, 09:50 AM

#12

dpieroni3

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Have also seen MAF sensors set fuel trim codes and causing misfires. something else to keep in mind along with what others have mentioned.

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