Update:
1)
Pending:
I found my MAF cleaner, disconnected the negative battery terminal, cleaned it, reconnected it, and cleared the code but it still came back.
After researching, I'm convinced now the MAF has a IAT. Since mine is a V6, I don't have to worry about "strong" vs "weak MAF. GM uses a Bosch 0280218232 with the GM part number for it being 92196278. Based on the research, I decided to buy it.
I'll update everyone once it is done.
I'm not sure what IAT sensor I bought earlier but my guess is it can be used to relocate the IAT to another location closer to the TB as I've seen posts for it. Not sure why GM would sell it unless there are cases where the IAT needs to be relocated (e.g., CAI).
https://www.gmpartsdirect.com/oem-pa...ensor-25775833
2)
Resolved:
Researching this, the cause of the throttle body codes were simply because I actuated the TB while cleaning it so it needed a re-learn. I followed the instructions from the thread below and it worked fine. Now, I only have the IAT "permanent" code which is issue #1.
https://www.camaro5.com/forums/showthread.php?t=298401