Car shutting off while driving

Tiny
COURTNEYS
  • MEMBER
  • 2017 CHEVROLET TAHOE
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
When I drive my car it will act like it’s losing power. The radio shut off and then stabilitrak message came on about 1 minute later car completely shut off. Advance Auto Part said he was getting about 12 testing thought it could possibly be alternator. Chevrolet manager told me yesterday probably not. But they are still trying to figure out problem. A month ago my outlets didn’t work they replaced fuse upfront for those and replaced I think a relay for the back middle seat power plugs. Once again the back ya gone out again and then this happened. Might be 2 different issues.
Saturday, June 6th, 2020 AT 10:08 AM

1 Reply

Tiny
AL514
  • MECHANIC
  • 4,105 POSTS
Hello, sorry to hear of your issues, a voltage reading needs to be taking at the alternator to make sure it's putting at least 13.5 volts with the car running. Low voltage can cause the engine computer to have all kinds of strange issues. It's best to test the alternator with all the lights on high beam and all accessories on to load the system.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-a-car-battery-works
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Saturday, June 6th, 2020 AT 4:18 PM

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