Question about GMC C1500

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Wiring for trailer plug, 2004 gmc sierra - C1500 GMC Cars & Trucks

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 375 Answers

SOURCE: 2007 gmc sierra 2500 IAT sensor

Well, the IAT (Intake Air Temperature) sensor is located on the air intake duct between the filter and the throttle body (Assuming you have the 6L motor). The wires are easily visible at the plug that connects the sensor to the wiring harness. That's the easiest place to access them.

Posted on May 18, 2008

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  • 66 Answers

SOURCE: spark plug wiring diagram

I dont understand why you would need that unless you took off all the wires and took out all the plugs and forgot how the wires were.I have the same truck and I always do the plugs and wires one at time to make sure I make a mistake.If this is your ploblem let me know because i might be able to walk you though it.

Posted on Jan 22, 2009

farroutideas
  • 78 Answers

SOURCE: wiring diagram or fuse box diagram-2007 GMC Envoy Denali

Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
22593cd.jpg
Hope this helps
Farrout!

Posted on Mar 18, 2009

  • 198 Answers

SOURCE: 2004 gmc sierra rear differential

remove cover.take off back wheels and calipers (or drums).turn differential to where you see small bolt/pin (5/16) horizontally (same direction as axles)on right side of differential.remove bolt/pin.A large pin (about 5"long 3/4"diameter) should slide out differential with ease ( you may have to tap one side of the large pin).turn differential to completely remove large pin.turn differential so you can see in the view window.push each axles in (they'll go in about 1 1/2"each) You may hear one of the axle C-clips fall.If not use a small telescoping magnet to remove the C-clips from the axles through the differential window.pull each axle out about 10"so they are out of the diff.Now remove the cap bolts(4-5/8"bolts) and remove the caps(mark the caps so they go in excactly the way they came out.be careful the diff might fall out.If not you may have to use a long bar or 2x4 to wedge and pry the differential out. Have a basket/crate w/rags in it to catch the diff.TIP:If you are removing the ring gear from the diff, the bolts are left handed bolts meaning you have to turn them clockwise to loosen and counter clockwise to tighten ; )

Posted on Sep 15, 2009

Testimonial: "thank you helped ALOT perfect instructions "

Molson02536
  • 3854 Answers

SOURCE: 2004 GMC Sierra 4dr truck. the fan does not work

The switch or the wire harness at the blower motor has gone bad. The highest setting 5 has no resistor, so the blower runs on high but the high current flow ends up burning up the switch's contact on that setting or the resistor wire harness at the blower motor has gone bad. Common would be the switch it self, if the switch is good. Then it's going to be the wire leads at the speed resistor by the blower motor under the glove box by the passenger leg compartment. Keep me posted, be glad to help you get your Sierra running 100% again soon.

Posted on Jan 06, 2010

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1 Answer

Tail and marker lights not working on trailer circuit, stop and turn signals work fine, 2004 gmc sierra 2500 hd


I would try hooking the trailer up to another vehicle and see if everything works right if everything works on the trailer I would start testing the trailer plug on your truck could be a wire has broken.

Jul 26, 2015 | 2004 GMC Sierra

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Right trailer turn signal does not work when hooked up to my 2003 gmc sierra. The light does work on the truck. Trailer light does work when hooked up with my other vehicles.


Check the plug at your gmc outlet, your right signal wire has been damaged before the plug somewhere. If you have a test light switch your right signal on and make sure it is working at the plug on your gmc, you will find it is not working, than trace the wire back from the plug till you find where it has been damaged or you can run a wire straight from plug to your right signal.

Jun 09, 2011 | 2003 GMC Sierra 1500

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Where is the fuse for a trailer lights


it should be at the back where the hitch is where the wire plug is there may be a lose wire that is not conected when u plug it into the trailer.

Nov 15, 2010 | 1999 GMC Sierra

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Wireing


sounds like a ground problem on the trailer

Apr 11, 2010 | 2000 GMC Sierra

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2008 GMC C5500 factory wired for trailer harness (7 pin). I just purchased brake controller and am trying to find where the controller harness plugs into the truck harness. Looking under the dash. Plug...


You are probably going to find four wires together that do not have a plug on them. There should also be a tag taped on the wires showing that it is for the trailer. You will have to put a plug or some kind of connection on those wires.

Mar 13, 2010 | 2008 GMC Sierra 3500HD 2WD

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I wrote an article not too long ago about diagnosing trailer wiring issues. It should be rather helpful. Click here to read.

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Brake controller should plug into the rear lights.

Apr 22, 2009 | 2007 GMC Sierra 1500

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1993 GMC Sierra 4x4, no brake lights, no rear running lights


If you still have this problem maybe this will help. I had to replace the trailer plug on a 93 GMC Sierra K1500 and had a problem with the light's not working. Had to trace wires from trailer plug up to tail lights. The problem was a broken ground wire. It took longer to remove all the tape and replace it than fixing the problem.

Dec 15, 2008 | 1993 GMC Sierra K1500

1 Answer

Diagram


Too big to post here. How can I email it to you?

May 22, 2008 | 2004 GMC Sierra 2500

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