Question about 2002 Chevrolet Impala

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No headlights on my 2002 impala police car. have power no ground

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TRY MOVING THE MULTI SWITCH ON THE RH SIDE OF STEERING WHEEL.IS THERE A SWITCH ON THE PANEL WHERE THE TRUNK BUTTON IS, IF SO TRY UNHOOKING IT.

Posted on Feb 08, 2010

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No Headlights


In the late 1990s GM and most other car companies changed the configuration of headlight circuits. Now the headlight switch provides the ground circuit instead of power. So yes there is a relay between the main switch and the dimmer.
The headlights get power from left and right 15amp fuses, and the relay and main switch provides the ground circuit. Your owner's manual should tell you which relay in the box is for headlights.

Jan 19, 2014 | 2002 Chevrolet Impala

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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

How do I change the headlights (dim) on my 2005 impala?


Dim headlights are an indication of a bad ground. Follow the ground wire from each of your headlights and look for a break or a bad connection at the ground screw. I'm guessing the ground screw(s) is near the headlights on the radiator support. May be one for each headlight.

Nov 28, 2010 | 2005 Chevrolet Impala

2 Answers

2005 impala lowbeams do not work at all. high beams, turn signals, and taillights are fine. i cut the negative and grounded it on the car and now the headlights are on but will not shut off unless i take...


ok put the ground back were you cut it and remove bezel near head light switch test powers in and out with 12 volt test light on low beam and high beam you may just have a bad head light switch make sure you have headlight power coming out of the swicth for low beams.

Mar 20, 2010 | 2005 Chevrolet Impala

1 Answer

2002 Chevy Impala Radio Doesn't Work


Check the radio fuse? Box is drivers side end of dash(drivers door open)or pass side end of dash(passenger door open)
police models have a connection for the speakers (passenger floorboard under floor mat) to connect the speakers to the police radios.
If they had the speakers connected to their radios,they may have unhooked them and not connected them back to the radio.
The wires are brown,grey,blue and light blue.All into a blue connector.

Apr 30, 2009 | 2002 Chevrolet Impala

1 Answer

No lights


Check headlight and high beam switch for power in, power out. If power there, change whichever switch isn't working (remember dimmer switch gets power from headlamp switch) If no power going to headlamp switch check main fuses and fusable links for problems.

Feb 21, 2009 | 2002 Chevrolet Impala

1 Answer

2004 chevy impala no headlights


there's a button on the right side of the steering wheel that says serv push that button. It's put right there for when they use them as police cars you can cut the headlights off. You will probably notice that dash lights are on.

Jan 15, 2009 | 2004 Chevrolet Impala

2 Answers

Automatic Headlights don't work on Impala - Police Package.


I have an 2004 impala and every now and then it would lose the headlights for a couple of seconds and they would come back on. I finally replace the headlight switch and the problem went away. A switch, if I remember right, was about $500.

Aug 21, 2008 | 2008 Chevrolet Impala

1 Answer

I need the headlight wiring scamatics for a 2005 impala


2002 impala highbeam light ,with new bulb inplace ,it will not come on.low beam, left turn light works I think it is in the wiing connector the headlight asemble .would like to know how the wring is connecting to the headlight asemble. please help. thanks jame

Aug 02, 2008 | 2002 Chevrolet Impala

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