Just got a 05 Tahoe z71

[hectorotani]

Ok so went to a different store and another code came up po102 also my info center on dash says bout 14 mpg depending on speed, could my fuel gauge be bad?

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[hectorotani]

Under truck above transfer case I see a hose not connected is this a vent hose?

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[hectorotani]

Under truck above transfer case I see a hose not connected is this a vent hose?

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[hectorotani]

I


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[Tonyrodz]

I
View attachment 203989

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Most likely your vent for the transfer case.

 

[Tonyrodz]

Ok so went to a different store and another code came up po102 also my info center on dash says bout 14 mpg depending on speed, could my fuel gauge be bad?

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Mass airflow sensor, low voltage. Is it plugged in tight?

 

[hectorotani]

Yes to my knowledge, also I turned on truck and it fired right up then I noticed maf,was not connected,I am surprised it ran


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[Tonyrodz]

Yes to my knowledge, also I turned on truck and it fired right up then I noticed maf,was not connected,I am surprised it ran


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Plug it in and clear the code.

 

[hectorotani]

Go back to loonytune or disconnected batt?

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[Scottydoggs]

unhook the neg cable for 15 minutes or so. will reset the pcm.

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