Question about 2004 Chevrolet Impala

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Headlight wiring diagram for 2004 Chevy Impala

I need a headlight wiring diagram for a 2004 impala.

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  • Anonymous Mar 12, 2014

    2013 impala wiring diagram at factory amp

  • Anonymous Mar 12, 2014

    2013 impala wiring diagram at factory amp

  • Anonymous Mar 20, 2014

    wiring diagrams

  • Anonymous Mar 27, 2014

    trying to find wiring diagram

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I would go to Alldata.com on line for your vehckle to get the wiring diagrams.

Posted on Jul 18, 2009

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Posted on Jan 02, 2017

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I have a gm- pontiac 2004 grand prix and the wiring to my headlights is all messed up. Needs to be completely rewired. I need headlight wiring diagram for this. Where can I find the wiring diagram?


if it is that bad , go to a wreckers / junk yard and get the full wiring harness and replace the existing harness
wiring diagrams are in the workshop manual available from ant auto parts shop

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I'' installed. An after market. Radio in my 2004 impala but I can't figure out how to shut my lights than when I run an ignition wire they shut off but my memory is gone what do I do


This radio wiring diagram may help you to figure out where that wiring job went wrong. Use it along with the diagram that came the aftermarket radio to make sure that you got all the wires in the proper places. babd4abb-f638-49a7-8a71-02b937b9dc05.gif

Jul 21, 2014 | 2004 Chevrolet Impala

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Headlights will not work, it does have daytime running lights 2002 chevy impala


Did you do a good visual inspection of the headlight area for anything obvious? Perhaps the crash jacked up your wiring. If you had to jimmy the switch to get high beams to work, that tells me the switch could be the problem. Take a look at a wiring diagram and do some basic troubleshooting if you have a multimeter. Here is a link with a couple of diagrams and suggestions that were given to another person with this problem.

The headlight on my 2002 impala quit working All fuses are

Jan 31, 2018 | 2002 Chevrolet Impala

1 Answer

Hello, I'm having an issue with my headlight. For almost a year now I do not have a dim (low) headlight on my passenger side of my 2002 Chevy Impala. My Impala has over 140,000 miles and a 3.4 Engine


If the relay were the problem both sides wouldn't work . Do you know how to do automotive electrical testing ? How to read a wiring diagram ? You can view wiring diagrams here http://www.bbbind.com/free_tsb.html Enter your vehicle info. year , make , model , engine size . Then under system click on lighting , then subsystem click headlamps . Click on the search button , then on the blue links one at a time . At the top of the first diagram you will see the fuse's for low an high beams . The fuse's send B+ voltage directly to the high an low beams , from there B+ voltage goes on to the dimmer switch shown on the next diagram .Low beam headlamps from the dimmer swich goes through the headlamp relay when energized by the BCM . When the relay is energized that compleats the circuit to ground at G- 201 . So you see if one side is working it can't be the relay . Doing electrical testing , voltage drop testing is the way to find the problem .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Electric Testing Techniques You Need to Know

How to read an electrical diagram Lesson 1


Mar 13, 2017 | 2002 Chevrolet Impala

1 Answer

My 2004 chev impala headlight won't turn on and


If you made sure your battery connections are tight then you may need trace you hot wire for a bad connection around the fusible links that run from battery.

Aug 23, 2013 | Cars & Trucks

1 Answer

Need wiring diagram for headligt on 2003 chevy impala with 3.8 cu engine


Sounds like a short or the relay is going bad to the headlamps. You may be able to google for the diagram but probably will need to get a repair manual from the nearby auto parts store for appx $25.00. I would start by checking continuity with the battery disconnected on that side from the positive wire to a ground. Also start with checking the relay, they are usually generic and you should be able to swap two as long as the numbers match and see if that fixes the issue.

Jun 08, 2012 | 2003 Chevrolet Impala

1 Answer

Impala headlights turn on and off when they want to


that would be a shortage in the wiring or your fuse is about to go out check that first its the easiest fix if that dont work follow the wiring harness till you find the shortage

Oct 18, 2009 | 2004 Chevrolet Impala

1 Answer

My headlights on my 2004 chevy impala do not work. I have changed all four bulbs, the light switch, checked all fuses and still nothing. My parking lights work as well as my tail lights and running lights....


I had the same exact problem as you. For some reason the high beam / low beam switch gets stuck in no-mans land. Turn it on and off a couple times and this should help.

Sep 28, 2009 | 2004 Chevrolet Impala

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