Question about 2002 Chevrolet Suburban

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02 chevy Z71surburban lights

I have an intermitant proplem with the low beams operating properly. Sometimes the low beams will not come on. It does not seem to be in the high/low beam switch on the colum. I have also checked to see if it could be the wiring in the colum, I moved the tilt up and down with no effect.It usually happens after you have turned the ignition switch off (like you go a short trip, then restart the car) and then restart the car. It does the same thing wheather you use the manual light switch or the lights are activated by the light sensing system. If you turn on the fog lights, they operate properly-comming on when you switch to low beams, even when the low beams do not come on.I've checked all the relays. I can not ever get the lights to come on by wiggling the beam switch on the colum, it's always happens when the ignition switch has been turned off and then back on, but you can never turn the switch on and off rapidly and make them work.Changes in temperture has no effect on problem. Does the head light circuit operate through the computer at all times? Any ideas on this problem.

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  • Chevrolet Master
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Do you know how to do electrical testing with a volt meter ? There are videos on youtube on basic automotive electrical tesing . If you want to fix electrical problems there are thing's you need to know . How to read an use a wiring diagram , componet location diagrams , voltage drop testing etc....

Electric Testing Techniques You Need to Know

Copy of Voltage Drop Essentials TST Motor Age

How an where to find wiring diagrams , here at http://www.bbbind.com/free_tsb.html

Posted on Mar 05, 2017

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: fuse diagram for 91 chevy corsica

Need copy of wiring schematic for 1991 chevy corsica

Posted on Feb 06, 2009

djicenova
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SOURCE: low beam headlights not working

check voltage at switch

Posted on Mar 18, 2009

  • 1 Answer

SOURCE: 1999 Chevy Cavalier high beam dash light always on

had same problem with wifes 01 cav.....after spending $400 from the dealer for there so called diagnostic....replacing the modulator under the steering column stilll she had no lights....turns out the wiring harness has corroded away somewhenre down the line and cost me $100 for an electrician to reconnnect and secure it with wire insulation and all is well...check for battery acid corrosion supposedly they know of problem but has never been recallled

Posted on Mar 22, 2009

  • 75 Answers

SOURCE: 1993 Chevy Silverado truck headlights high beam only works no low

dimmer switch has gone bad need to change your dimmerswitch

Posted on Apr 01, 2009

  • 312 Answers

SOURCE: 2000 impala-low beams don't work but high does

sounds like the problem is the dimmer switch, get a price on the dimmer switch. If you have to, get one at a junk yard . It's cheaper.

Posted on Dec 31, 2009

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http://repairhelpcenter.blogspot.com/2012/01/passenger-side-low-beam-out.html

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