2005 Chevrolet Sierra with codes P0116, P0332, P0420, and P0446, what do these codes mean?

Question

2005 Chevrolet Sierra 1500 5.3L with codes P0116, P0332, P0420, and P0446, what do these codes mean?

Answer 1

P0116 CHEVROLET - Engine Coolant Temperature Sensor Performance
Read more: https://www.autocodes.com/p0116_chevrolet.html

P0332 CHEVROLET - Knock Sensor 2 Circuit
Read more: https://www.autocodes.com/p0332_chevrolet.html

P0420 CHEVROLET - Catalyst System Low Efficiency Bank 1
Read more: https://www.autocodes.com/p0420_chevrolet.html

P0446 CHEVROLET - Evaporative Emission Vent System Performance
Read more: https://www.autocodes.com/p0446_chevrolet.html