Which alternator is correct for my car, 150 or 170?

2012 CHEVROLET IMPALA
130,000 MILES • 3.6L • V6 • AUTOMATIC
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EMRAPPL143
  • MEMBER
  • 1 POST
Hi, which alternator is for my car? 150 or 170?
VIN: 2G1WC5E32C1204950
The car listed above is an LTZ model.
Aug 3, 2022 at 5:52 AM
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

To find out which alternator is in your vehicle, you will actually have to call your local Chevrolet dealer and talk to the part department. Provide them with the VIN and they will be able to tell you which alternator was equipped from the factory, 150 or 170 amp.

I have attached the replacement procedure below for your reference.

Let me know of any questions.
Thank you.

https://www.2carpros.com/articles/how-to-replace-an-alternator
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Aug 3, 2022 at 8:15 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,189 POSTS
The old alternator should have a part number on it. If you can give that to us, we can tell which alternator you have. In general if there are no large accessories you will have the lower amp alternator.
Aug 3, 2022 at 10:28 AM