06 GMC Envoy, both headlights not coming on, all other lights work. Just changed both bulbs, it's not the bulbs, checked all fuses, it's not a fuse problem. Just had alternator replaced and pulley's replaced, as well as new belt, about 2 months ago. Any idea's on what else I can check before bringing in to the shop??
Duralast / Relay - Headlamp
Part Number:
20601
Autozone: $39.99
I had the exact problem with my 2004 Envoy. You need to replace the Headlamp Relay. This is a very simple fix. The relay is located under the hood in box just above the battery. Pull the cover off of the box, look at underside of box to see layout of relays/fuses, i do not recall the exact abbrevaition used for the headlamp relay but there are only two relays in there that look like the one you need, just play with those two and you will get it.
Do not take it to the shop, my wife took ours in and they charged us way to much to diagnose such a simple fix.
You can test it before you buy the part by switching the relays that are the same around and seeing if your headlights work (they will).
It is as simple as changing what looks like a big fuse.
HDM #46- Relay is the one that needs to be changed.
Great tip!!!! My Envoy 2004 had the same issue and I switched the HDM #46 also and it worked, thanks!
me too, 06 envoy hdm # 46 all set ! thanks alot!!!!!
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If the headlight high beam switch is bad, then the low beams will not work. I had the same problem on my truck. I changed the dimmer switch and the problem was corrected. Try checking the switch out first.
HEADLIGHTS NOT WORKING
It
can be faulty headlight switch or issue with its wiring. Or its faulty head
light fuse.
==========
To
troubleshoot the issue i suggest you few help links with appropriate solution.
So you can follow the test and confirm what exact problem is there in your case
of headlights not working:-----
Click
the link below: -----
http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html
----------
• Working of Headlight switch?
------------
• Both headlight bulbs blow together?
------------
• Car
headlight bulbs don't last long?
---------------
http://technoanswers.blogspot.in/2012/06/2007-dodge-caliber-low-beam-headlight.html
----------
----------
----------
--------
----------
http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-both-low-beam.html
------------
http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html
---------
How to Replace a Headlight
http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html
------------
How to Replace a Headlight
Bulb
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html
-----------
How to Replace a Headlight
Switch
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html
----------
How to Replace a Headlight Assembly
http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html
How to Replace a Park Light Assembly
http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html
-----------
http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html
----------
http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html
----------
http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html
----------------
These
will help.
Thanks.
http://howtobyme.blogspot.com/2011/11/highbeams-stopped-working-but.html
---------------
Only one head light
works on 2001 Dodge Caravan?
http://howtobyme.blogspot.com/2011/11/only-one-head-light-works-on-2001-dodge.html
----------------
Headlight Assembly Removal On Honda Accord
http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html
-------------
Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html-----------
All headlights not working?
http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html
----------
Headlight wiring diagram for 1997 Lincoln Town Car?
http://technoanswers.blogspot.in/2012/02/headlight-wiring-diagram-for-1997.html
-----------
Dash Lights And Front
Marker Lights Flashing On And Off
http://schematicsdiagram.blogspot.com/2012/10/dash-lights-and-front-marker-lights.html
----------
2001 Chevrolet Tracker: Headlights and Dash
lights Pulsating?
http://whoisbyme.blogspot.in/2012/06/2001-chevrolet-tracker-headlights-and.html
---------
No parking lights and headlights not turning OFF?
http://technoanswers.blogspot.com/2012/01/no-parking-lights-and-headlights-not.html
-------------
How to replace HID headlight bulbs for lexus
400h?
http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html
---------
Head
Lights Comes ON by Itself?
http://whoisbyme.blogspot.in/2012/07/head-lights-comes-on-by-itself.html
---------
Only high beams work but head lights not
working on Ford F350?
http://howtobyme.blogspot.com/2011/11/only-high-beams-work-but-head-lights.html
-------------
http://howtobyme.blogspot.com/2011/12/how-to-replace-headlight-bulbs-on.html http://repairhelpcenter.blogspot.com/2011/12/how-to-change-headlight.html ------------- http://technoanswers.blogspot.com/2012/01/headlights-will-not-turn-off-on-ford.html ---------- http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html --------- http://technoanswers.blogspot.in/2012/02/hummers-headlights-flashes-while-start.html ---------- http://schematicsdiagram.blogspot.in/2012/02/using-non-afs-headlamp-assembly-for-afs.html ------------ How to
replace Headlight Bulb on 2001 mitsubishi magna
Only high beams working on GMC Savana?---------
• Working of Headlight switch?
----------
• Both headlight bulbs blow together?
--------
• Car headlight bulbs don't last long?
--------
How to replace Headlight Bulbs on Lincoln
Town Car?
How to change headlight?
Both headlights and turn signals not working?
http://schematicsdiagram.blogspot.com/2011/12/both-headlights-and-turnsignals-not.html
----------
Headlights will not turn OFF on Ford expedition and car trailer?
Headlight Assembly Removal on 2010 buick lacrosse?
http://technoanswers.blogspot.in/2012/04/headlight-assembly-removal-on-2010.html
---------
Headlights flickering and car hesitates to
start?
Hummers headlights flashes while start?
Using non-AFS headlamp assembly for AFS
assembly?
http://www.howtorepairguide.com/2012/10/how-to-replace-headlight-bulb-on-2001.html
---------
These details will help.
Thanks.
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