HI there
If replacing the injector didn't resolve the issue then you need to take a noid light and test the wiring and make sure there is injector pulse. If not, then you have an issue with the wiring harness or the computer. If that all looks ok, then do a compression test on #2 cylinder.
P0202 CHEVROLET - Injector 2 Control Circuit Read more: https://www.autocodes.com/p0202_chevrolet.html
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