Vehicle will not crank with the key, but will crank when boosted?

2009 GMC ACADIA
232,000 MILES • 3.6L • 6 CYL • 4WD
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4236199581
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Why is this happening? Battery has been replaced (twice). But the problem still exists. It acts like there is a live circuit still on somewhere.
Oct 18, 2022 at 9:23 AM
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STRAILER
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This is common when the starter motor is going out. here is a generic guide to help you change it out with instructions below to show you how on your car. The booster battery helps give the motor more voltage which overcomes the failure.

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

Check out the images (below). Please let us know if you need anything else to get the problem fixed.

Oct 18, 2022 at 11:18 AM
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4236199581
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Thank you
Oct 18, 2022 at 11:59 PM
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STRAILER
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Use 2CarPros anytime, we are here to help. Please tell a friend.
Oct 19, 2022 at 12:28 PM