There are a couple of things that can cause this as it is a pretty common issue with these types of vehicles.
First and foremost, we need to check for codes. If there are other codes, then that will take us to the correct issue.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
If you have low voltage codes, then the issue is the battery needs to be replaced so we need to test the battery using this guide.
https://www.2carpros.com/articles/car-battery-load-test
If you have communication codes, then the issue is most likely a wiring issue.
Lastly if there is a loss of data from the PCM or cannot communicate with the PCM then the PCM is likely the issue.
However, let's start with codes and then we can go from there.
Thanks
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Friday, April 29th, 2022 AT 2:32 PM