4 codes where to start?

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Jeremyhuskers

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1999 tahoe 5.7 4x4

I've been having transmission problems for a week or so now. After scratching my head and not believing I have a bad transmission I got it scanned with a buddies generic scanner.
Code 1: P0131 o2 sensor bank 1 low voltage
Code 2 P0151 o2 sensor bank 2 low voltage
Code 3: P0914 gear shift position circuit
Code 4: P0101 mass or volume air flow a circuit range/ performance
Then there were 2 other codes but nothing came up
Code 1: B1014
Code 2 P3101
It seems to be something electrical that's messing up everything but I'm unsure
I just put in a new altenator 2 weeks ago. Battery is 3 years old.
 

Big Mama

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Have you checked your ground cable at the other end for corrosion?
 

swathdiver

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Check your wire harness under the truck, around where the O2 sensors are after checking the grounds. Might be time for a new battery.
 
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Jeremyhuskers

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I forgot to mention these are all pending codes. The only time a light will come on is when I go to WOT then the transmission will go to shift but wont (just bumps off limiter) and a battery light comes on. I'll check the harness and grounds might not be till tomorrow but I'll keep you updated
 
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