Need help please

[stevencox93]

Okay I'm new to this forum so excuse my ignorance if I mess up. I tried searching for the answers but couldn't find anything relating to my situation. My mother just bought her Tahoe used back in May and it has currently 138,000 miles. Anyways it randomly threw a bunch of codes and need help figuring solutions.
It threw:
C0227
C0300
C0305
C0306
C0321
C0327
C0359
C0374
C0379
P0442 (3 TIMES)
The guy said he has seen where the transfer case switch go bad and throw crazy codes like this so we bought a new GM replacement one and installed it but mom doesn't want to drive it just in case that does more damage than good. Her Tahoe is a 2004 Z71 4X4. What do y'all think is the problem?

 

[stevencox93]

Anything?

 

[dropmech]

C0227 = ABS code
All of the C03xxx codes are your 4wd/transfer case. Take it to CHevy and have them reprogram the transfer case. There are service bullitins(sp) out for a lot of those. You may not even have to pay for it. And the Po442 is your Emissions evap system. May have a leak somewhere in the system. A quick google search can give you more amplifying info on each seperate code.