Question about 2004 GMC Canyon

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No brake lights

My 04 gmc canyon tails lights and 3 brake up top are not working correctly.the left side has all lights stay on and the blinker is very dim when i tap my brakes the left turn signal turns on. on the right side i have no running lights or brake lights but the blinker works just fine and no lights on for the 3 brake light up top. ive replaced bulbs and fuses but the fuse for the stop keeps blowing. would the brake lamp switch be causing this problem?

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  • GMC Master
  • 11,043 Answers

No , if your blowing a fuse it is the result of a short to ground on the electrical circuit , wiring ! Do you know how to do automotive electrical trouble shooting ? Using a volt meter ? Do you know what a wiring diagrams is ? How to read one.
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Free wiring diagrams here
http://www.bbbind.com/free_tsb.html Enter vehicle info. under system click on lighting , subsystem click stop lamps . Then click the search button , then the blue link. Use the wiring diagram to pin point testing locations in the circuits . Check out videos on youtube on finding a short .
how to find electrical short on most any car or truck
Finding The Source Of Electrical Shorts In Your Car

Posted on Jun 23, 2017

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Posted on Jan 02, 2017

ourhowse
  • 2007 Answers

SOURCE: 2005 Canyon turn signal problem

No, but that's probably where your problem is. The wires get the hell beat out of them by stones, and then they short out and cause problems. I would take a look at it.

Posted on May 06, 2009

  • 49 Answers

SOURCE: right turn signal stays on will not flash left works.2001 jimmy

its your blinker box.. all major lights run through there

Posted on Aug 04, 2009

  • 225 Answers

SOURCE: 1997 GMC Sierra p/u. Brake light & blinker out. Taillights ok.

I have notice that this is a common problem. The socket most of the time goes bad, I don't know why but they just do. You can pick them up at any parts store for around 5.00 each. If you don't have a volt meter and ground straps to test it right, then I would try changing the sockets out. Quick and easy. Let us know how it goes.

Posted on Aug 30, 2009

  • 100 Answers

SOURCE: 1997 GMC Sierra p/u. Brake light & blinker out. Lamp & fuse ok.

you probably got the wrong bulb
those are usualy a different number higher wattage, they look exactly like an 1127 but are a 2027 or even a 3027 check the bulb base it has the number printed on it

Posted on Aug 30, 2009

  • 12 Answers

SOURCE: 1999 GMC Suburban, K1500 4WD. Top brake light bar

third light is different circuit. saftey reason check fuses grounds wires

Posted on Oct 11, 2009

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I have to believe that with all of the "non related" issues happening that there is a wiring harness problem. If you track the harness back from the tail lights you will probably find a nick or a break in the line. If nothing shows then check the connection point which should be somewhere around your fuel tank. It will be a male/female fitting that will pull apart and you can check at that point with a meter if it is working to that point. If not it then you will have to work your way all the way up to find the fault point.

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I have notice that this is a common problem. The socket most of the time goes bad, I don't know why but they just do. You can pick them up at any parts store for around 5.00 each. If you don't have a volt meter and ground straps to test it right, then I would try changing the sockets out. Quick and easy. Let us know how it goes.

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1 Answer

Right turn signal stays on will not flash left works.2001 jimmy


its your blinker box.. all major lights run through there

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