Inside electrical rarely works?

2000 CHEVROLET IMPALA
135,000 MILES • 3.8L • 6 CYL • AUTOMATIC
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BLACKARIA75
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  • 2 POSTS
The inside electrical was not working much and some other things were running poorly as well. We had the A/C repaired and the radiator replaced. The electrical still won't work most of the time. No A/C, no defrost, no heat. The windows do work. Also, coolant keeps disappearing but no indication of leak below the car.
Sep 5, 2023 at 12:52 PM
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STRAILER
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We only handle one problem per thread. Please start a new question for the coolant issue. So, when you say electrical do you mean just the no A/C, no defrost, no heat? Please let me know if the items are not working. It sounds like you have a BCM that is out but I need more information, so we don't good down the wrong repair trail.
Sep 6, 2023 at 4:25 AM
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BLACKARIA75
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Yes, every once in a while one or the other will work for a short time - but for the most part (like 99% of the time) they will not work. There are no lights on that front dash area that come on to suggest power to it at all. When it works during those brief times the dash where the A/C, heat, and defrost switches are will light up. Thanks.
Sep 6, 2023 at 1:10 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,238 POSTS
Thank you, it sounds like the ignition switch is going out, but to be sure turn the ignition switch on and check for power through it, here is a guide to help and a wiring diagram below to help you see which wires to test.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Test for power at all wires on the bottom of the switch diagram. Check out the images (below). Please let us know how it goes.
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Professional Diagram for 2CarPros Members
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Sep 8, 2023 at 8:52 AM
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