2013 GMC Sierra 1500 P015d P219B help

[Treeone]

Changed both upstream o2 sensors. Still getting same codes

 

[98trck]

Changed both upstream o2 sensors. Still getting same codes

found this on GM-trucks.com -

Here is everything you ever wanted to know about those codes:


P015D O2 Sensor Delayed Response - Lean to Rich (Bank 2 Sensor 1)

P219B Bank 2 Air/Fuel Ratio Imbalance

PETE