head lights

vegasbilly702
0

Asked by vegasbilly702 Mar 12, 2013 at 08:08 PM about the 2006 GMC Sierra 1500

Question type: Maintenance & Repair

where is the head light fuse i changed the bulbs and cant finfd the fuse

6 Answers

DavidH25
Not Active

Headlights don't have a fuse. they have a breaker, so they will not fail on you entirely. When the breaker cools, they will come back on and the breaker on most cars is under the hood

1 out of 1 people think this is helpful.
tenspeed
52,365

I didn't find anything specifically for the 2006 GMC but every GMC truck fuse box I see has fuses for the headlights. Usually four fuses - low and high for both sides. --- I think it would be a low probability that all fuses are blown. The truck may have a body control module (BCM) that controls the headlights.

DavidH25
Not Active

OK, that's fine, but they are breakers: from wiki: All Vehicle headlights are protected with circuit breakers instead of fuses because, when light bulbs fail, there is an ionizing arc internally that causes high current. You see that at home - when a light bulb fails you see an instant of very bright light. This pulse of high current can blow a fuse. It also can trip a circuit breaker, but the circuit breaker is designed to reclose while, once a fuse is blown, it stays blown. Headlights are a critical safety device. It is better to attempt automatic reclosure following a fault, than it is to leave the headlights off, in case the fault was temporary.

DavidH25
Not Active

OK, I really did a lot more looking and it seems we are both right: From: ChevyTruckPages.net: Circuit breakers Headlamp and parking lamp circuit In addition to a fuse, the Headlamp circuits are protected by the Circuit Breaker in the light switch. An electrical overload on the breaker will cause the lights to go on and off, or in some cases to remain off.

DavidH25
Not Active

Also..geez TS it gets better...Chevy seems to have this also: The following wiring harnesses are protected by a "fusible link" which is a special wire incorporated in the circuits: Headlamp high beam indicator Horn Air conditioning high blower Ignition circuits Starter Solenoid (pull in and hold) circuit Should an electrical overload occur, this wire will fail (burn) and prevent major damage to the harness.

tenspeed
52,365

GM does some strange things. My '02 Pontiac has fuses and the BCM controls the headlights. The center leg is always hot (12 Volts) and the ground side varies from 12 volts when off to 6 volts for DRL's to zero volts for headlights on. -- It's a real head scratcher if you don't know about it because with the lights off, all three wires show 12 volts to ground.

Your Answer

Add photo

Related Questions

Sierra 1500
Looking for a Used Sierra 1500 in your area?
CarGurus has 60,770 nationwide Sierra 1500 listings starting at $1,995.
ZIP:

Search GMC Sierra 1500 Questions

GMC Sierra 1500 Experts

#1 dragonflyoffshore
dragonflyoffshore
Reputation 1,560
#2 John Saffrahn
John Saffrahn
Reputation 1,090
#3 Glenn Clingenpeel
Glenn Clingenpeel
Reputation 940
View All

Related Models For Sale

Used Chevrolet Silverado 1500"
2,256 Great Deals out of 171,180 listings starting at $1,100
Used Ford F-150"
2,497 Great Deals out of 177,299 listings starting at $1,495
Used GMC Sierra 2500HD"
194 Great Deals out of 14,826 listings starting at $3,995
Used Dodge Ram Pickup 1500"
809 Great Deals out of 15,799 listings starting at $1,222
Used Toyota Tundra"
480 Great Deals out of 25,830 listings starting at $2,995
Used Chevrolet Silverado 2500HD"
528 Great Deals out of 39,200 listings starting at $2,600
Used Toyota Tacoma"
519 Great Deals out of 19,934 listings starting at $2,199
Used GMC Sierra 1500HD"
12 Great Deals out of 137 listings starting at $4,900
Used Chevrolet Tahoe"
1,054 Great Deals out of 33,590 listings starting at $2,800
Used GMC Yukon"
323 Great Deals out of 9,816 listings starting at $2,850
Used Ford F-250 Super Duty"
644 Great Deals out of 34,084 listings starting at $2,500
Used GMC Yukon Denali"
215 Great Deals out of 5,504 listings starting at $3,500

Used Cars For Sale

2014 GMC Sierra 1500 For Sale
53 Great Deals out of 33,684 listings starting at $19,562
2013 GMC Sierra 1500 For Sale
138 Great Deals out of 2,552 listings starting at $14,988
2012 GMC Sierra 1500 For Sale
119 Great Deals out of 2,510 listings starting at $12,876
2011 GMC Sierra 1500 For Sale
128 Great Deals out of 2,713 listings starting at $10,950
2010 GMC Sierra 1500 For Sale
48 Great Deals out of 1,162 listings starting at $7,995