# 2008 Chevrolet Impala - Electrical gremlins

**URL:** <https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, electrical-wiring\
**Created:** [December 11, 2022, 11:00pm UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894 "2022-12-11T23:00:29Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Charlie26](https://avatars.discourse-cdn.com/v4/letter/c/59ef9b/32.png) [@Charlie26](https://community.cartalk.com/u/Charlie26)\
**Post date:** [December 11, 2022, 11:00pm UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/1 "2022-12-11T23:00:29Z")

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Heater actuator often engages for no reason causing failure of actuator. Low washer fluid message is on when not low. Low beam headlights do not come on either in automatic or manual mode

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**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\
**Post date:** [December 12, 2022, 2:39am UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/2 "2022-12-12T02:39:01Z")

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Thanks for the info.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [December 12, 2022, 8:06pm UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/3 "2022-12-12T20:06:15Z")

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Perhaps this is caused by a bad BCM (Body Control Module), but it is very relevant to ask…  
_Is it possible that this car was ever in a flood?_

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [December 12, 2022, 9:23pm UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/4 "2022-12-12T21:23:14Z")

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> [@Charlie26](#):
>
> Low washer fluid message is on when not low.

Ask shop to test the fluid level sensor.

> [@Charlie26](#):
>
> Low beam headlights do not come on either in automatic or manual mode

How do you drive at night? Headlights on high all the time, even w/oncoming cars? If so, this seems the highest priority of the three issues. Ask shop to check the low beam bulb filaments, usually one would fail and the other work, but coincidentally both could fail at same time. Could be something else, but that’s where I’d start.

Not sure what _heater actuator_ you refer.

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**Author:** ![Charlie26](https://avatars.discourse-cdn.com/v4/letter/c/59ef9b/32.png) [@Charlie26](https://community.cartalk.com/u/Charlie26)\
**Post date:** [December 14, 2022, 1:33am UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/5 "2022-12-14T01:33:55Z")

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Car was never in a flood. How can I check for a bad BCM ? And what would I expect to pay to have the BCM replaced?

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [December 14, 2022, 3:04am UTC](https://community.cartalk.com/t/2008-chevrolet-impala-electrical-gremlins/187894/6 "2022-12-14T03:04:28Z")

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> [@Charlie26](#):
>
> How can I check for a bad BCM ?

First check the common failure points; headlight bulbs, relay, headlight switch and dimmer switch (multifunction switch).