Wiring Problems of GMC Canyon

GMC Canyon owners have reported 10 problems related to wiring (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Canyon based on all problems reported for the Canyon.

1 Wiring problem of the 2015 GMC Canyon

Failure Date: 05/12/2020

Truck locked into limp mode suddenly one day and the check engine light came on. The truck was then stuck in one gear. Took it to a mechanic immediately who replaced the fuse box after finding it burnt out. Fast forward a month later, same issue occurs on the road. Both issues occurred while accelerating during a turn. Took to mechanic again to find tcm fuse burnt out and codes p0700 and p2534 present. Mechanic replaced fuse and stretched out wire bundle to see if wiring was an issue. Mechanic also took the truck on a road test to try to duplicate the issue to no avail. As of now the truck is working after the fuse was replaced, however it may happen again in the future.

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2 Wiring problem of the 2008 GMC Canyon

Failure Date: 10/16/2017

The contact owns a 2008 GMC Canyon. While driving approximately 70 mph, the contact noticed a burning odor. The air conditioner was on speed 2 as smoke and plastic particles emitted into the interior of the vehicle. While switching to speed 1, there was no response. There was also no response for speed 3. The air conditioner functioned at speed 4, but was later turned off due to the failure. The vehicle was driven to the contact's residence and parked due to the failure. The contact inspected the vehicle and noticed that the wiring harness and resister were completely melted. The vehicle was not inspected by a dealer. The contact replaced the wiring harness and the resister, and the air conditioner speeds 1 - 4 properly functioned. The contact was unable to determine if the parts would prematurely fail again. The manufacturer was notified of the failure and indicated that there was no recall; however; the contact should take the vehicle to the dealer for diagnostic testing and repair. There was a service campaign to address this failure, but not for this specific year, make, and model. The failure mileage was not available.

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3 Wiring problem of the 2016 GMC Canyon

Failure Date: 03/10/2017

Rodents are eating the wiring in my new truck. I've driven a Nissan truck for 18 years with zero issues with rodents. I purchased the new Canyon in July of 2016, and within 6 months, entire wiring harnesses with 7 wires are chewed completely through. The dealer refuses to cover damage under warranty.

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4 Wiring problem of the 2007 GMC Canyon

Failure Date: 05/15/2015

Heater controls quit working. Upon further investigation, the factory wiring harness main hvac connector is burnt.

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5 Wiring problem of the 2005 GMC Canyon

Failure Date: 05/01/2015

Air conditioning stopped working on fan positions 1,2, and 3 and works only on 4. Eight pages of complaints indicated that faulty components were put into truck at factory and should be recalled: blower motor resistor, wiring harness and poor ground wire. Ac delco part 15-80521 one part requiring replacement.

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6 Wiring problem of the 2005 GMC Canyon

Failure Date: 02/20/2010

The plug that controls the hvac has shorted out causing burn marks in the inside of the connector. This causes the blower to only work on the highest setting (number 4). I had to replace the resistor - p/n 15218254, connector - p/n 15306069, and the wiring harness - p/n 89019124. I am not sure how many times this has been reported, but it might not be a bad idea to check out coloradofans. Com. There has been complaints spanning back to 2005 up to today about this.

7 Wiring problem of the 2005 GMC Canyon

Failure Date: 09/03/2009

The resistor in the fan kept burning out and had been replaced. Finally it was determined that the wiring harness was malfunctioning and required replacement. I believe this is a known defect, yet nothing was done by gm.

8 Wiring problem of the 2005 GMC Canyon

Failure Date: 08/19/2008

Air conditioning fan abruptly stopped working on all fan speeds except "4", the highest position. Checked internet for possible solutions and found that there have been numerous failures exactly like mine. All involved the "blower motor resistor assembly, connector and/or wiring harness" shorting out. Scortching the connectors, resistor assembly and causing the plastic to melt/burn. Gm parts at local dealership had replacement parts and I was able to resolve the problem. Speaking a gm service advisor, he confirmed that there are numerous repair problems with these parts on the GMC Canyon/ Chevrolet colorado 2004-2007. But no explanation for why they are failing. Numerous internet reports with photo's showing damage and explaining problem most requiring multiple or repeated repairs. Old parts are available.

9 Wiring problem of the 2006 GMC Canyon

Failure Date: 03/01/2007

I have a 2006 Canyon and in the last year I have had to replace tail lights,three sterios,4x4 buttons,windows,wiring has been repaired severial times,the truck is excessivly hard on gass,and as soon as my inline five cylinder engine hit 31. 000 km I had to take it back to the dealer once again ,this time for a new engine. Apparently there only good for thirty thousand and then need to be replaced. Hard to believe this truck cost me almost forty thousand dallors. Dont get what you pay for with a gm. My next truck will be a Toyota and this Canyon has convinced me to never buy another gm product again and hopfully I can save some people from making the same mistake I did.

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10 Wiring problem of the 2004 GMC Canyon

Failure Date: 12/08/2005

Rear turn signal lights, brake lamps and head lamps experience permanent loss. Sometimes when the vehicle becomes wet the cruise control stops functioning, the power door locks stop working, the power windows stop working, and the power rear view mirrors stop working. Also there is periodic non-functioning of the remote key entry. As of 11/10/2006 the rear tail lights have been replaced twice and one head lamp at owners expense. Currently a third brake light requires replacement. On Nov. 10, 2006 I took the truck in for repair an mentioned the recall on this particular problem. The dealership said that gm has not issued a recall and that the owner would have to pay for the repairs. I am aware of the "NHTSA campaign number 06v-139" and gm's April 26, 2006 response to mr. Daniel c. Smith, associate administrator for enforcement, NHTSA. Although the recall references only the brake lamps and possibility of cruise control failure, I believe the problem is further exasperated with the other afore mentioned electrical problems. Consequences present themselves in the form of distractions to the driver when trying to drive and make adjustments to the following electrical componets when they fail to function: door mounted rear view mirrors, lowering of windows in order to pay for highway tolls, rear brake lights and turn signal lights fail, and reduced head lamp failures.

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Other Common Electrical System related problems of GMC Canyon


Safety Ratings of Canyon Cars
Fuel Economy of Canyon Vehicles
Canyon Service Bulletins
Canyon Safety Recalls
Canyon Defect Investigations