Hi there,
Since replacing the O2 sensors hasn't solved the issue, it's likely a wiring problem. Here is some more info for you.
P1130 CHEVROLET - HO2S Circuit Low Variance Bank 1 Sensor 1 Read more: https://www.autocodes.com/p1130_chevrolet.html
33.7k questions
32.5k answers
1.3k comments
23.0k users