I have a po170 and p1174 and po301 not runing good

P1174 Chevrolet Fuel Trim Cylinder Balance Bank 1
P1174 Fuel Trim Cylinder Balance Bank 1

These two posts will help you understand what it means and what to do'

P1174 - Fuel trim adaptive malfunction (Bank 1)
P1175 - Fuel trim adaptive malfunction (Bank 2)

Where did you get code? whomever ran diagnostic should have told. Anyone can buy a $19.00 scanner, and still not code meaning, All Vehicles in North America use OBD2 codes and you can look online by typing P1174 code. the results are free. It took about 5 seconds to find answer..
https://www.autocodes.com/p1174_chevrolet.html

https://www.engine-codes.com/p1174.html
https://www.troublecodes.net/gmcodes/p1174/

the following links can assist you
P1174 Chevrolet Fuel Trim Cylinder Balance Bank 1 P1174 Chevrolet Fuel Trim Cylinder Balance Bank 1

change spark plugs don't forgey yo gap yhem correcylt

Please go to this web page.
http://engine-codes.com/p1174_honda.html

P1174 Chevy - Fuel Trim Cylinder Balance.
Possible causes- Failed HO2S
- Ignition problem
- Fuel injection problem
- Engine mechanical condition
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)

trouble code p1174 for 2008 chevy 1500? P1174 indicates fuel trim cylinder balance malfunction.

you can enter those codes in the address bar and your pc will help you out. Just one code at a time. Hope this helps. Mike

it has two.