Three days ago, my dashboard lights (battery, ABS, air bag, brake) starting coming on and going off while the truck was running (occurred while I was driving and when stopped). On the second day, my car was DEAD & I replaced the battery. Yesterday, my truck started but the lights are still coming on & off. Did the basic diagnostic at Advanced Auto. Nothing showed up. My alternator is 2 years old. I had the o2 sensor & the catalytic converter replaced 2 years ago. Any ideas on what could be wrong with my truck?

 

Welcome to the forum. You need to post your question in the Trailblazer section of the form where you will get more views as this is the Welcome New Members section. 😊

 

We don't know if they did a module health check.
If something is draining the charge from the battery, that will need to be isolated and that system checked for malfunctioning.

 

I couldn't figure out how to do that. There was no link. Any help would be appreciated.

 

https://chevroletforum.com/forum/trailblazer-27/