Key will not start the car?

2010 CHEVROLET EQUINOX
140,000 MILES • 4 CYL • 2WD • AUTOMATIC
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THROMPER
We've checked everything from the battery, starter, alternator, etc. The key will not unlock the car with the buttons, so I changed the battery in it, and it started working again. Then it stopped, so I unlocked the car manually, but the car has an antitheft warning light on, and the car won't start. It is a physical key, no push to start. Why would the key still not start the car?
Nov 18, 2024 at 1:28 PM
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STRAILER
  • ASE Certified Mechanic
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  • ASE Certified Mechanic
Could it be the battery is dead again, sometimes new batteries can be old and not work correctly, also, is the security light flashing when trying to crank it over? If not, the security system is not the problem. Also, when you say, "key still not start the car?" Do you mean the engine cranks over and does not start and run? Or does the engine not crank over (starter)?

Please go over this video and get back to me:

https://www.youtube.com/watch?v=lXLJbuAZ4CE&t

Please upload pictures or videos in your response of any problems so we can see what to help you with.
Nov 18, 2024 at 5:54 PM
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THROMPER
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It isn't cranking at all; we went and got the battery tested at 2 different places and both came back saying it was good. Here is a video of what it is doing.
Nov 18, 2024 at 5:59 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,520 POSTS
  • ASE Certified Mechanic
Thanks for the video. it looks like the starter has gone out. The security light is not flashing so that should not be a problem. We need to get a test light and see if the trigger wire to the starter is getting power while the key is in the crank position. This guide can help:

https://www.2carpros.com/articles/starter-not-working-repair

Here is the location of the starter and how to change it out, if there is power at the trigger the starter is bad. Please go over this video as well:

https://www.youtube.com/watch?v=6YRW8fyNudY&t

Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.
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Nov 19, 2024 at 10:09 AM
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