Wiring problems of the 2003 Chevrolet Silverado

Seven problems related to wiring have been reported for the 2003 Chevrolet Silverado. The most recently reported issues are listed below.

1 Wiring problem

Failure Date: 01/04/2016

While driving, the heater blower stopped working and I smelled burning plastic or insulation. I pulled over and figured out it was coming from under the dash. Logically I pulled the bottom cover off from below the blower assy. (former mechanic). Smell was coming from plug harness and relay. Melted wire insulation and melted plastic from plug harness(obvious short). I was near an auto parts store and checked to see if they had this wiring plug assy. And they informed me that they did and this was an issue that gm had and there had been a safety recall on this. It's winter and I needed a defroster! roadside fix, but this could have been much worse. Contacted gm and they informed me that this was not their problem because the VIN number wasn't part of their recall. Gm case # 8-174060432. Not dropping this, this could have gotten worse.

2 Wiring problem

Failure Date: 06/12/2013

Blower motor switch resistors, defective from factory. Resistors get so hot they melt and melt the end off the factory wiring harness. The wires and blower motor are suppose to be protected by a fuse but the fuse never blows. Replaced resistors in 2013 but it did not last 1 year and burned up again in 2014! gm has known about this problem for many years but does not care if the wires over heat and cause a fire.

3 Wiring problem

Failure Date: 10/12/2007

I am the owner of a 2003 Chevrolet Silverado 2500 truck. Approximately one month after the truck was purchased, it was being driven at about 45 mph and began to lose power while being driven. Pushing on the accelerator made no change. The truck was taken to the dealership from where it was purchased, they tested the truck and reported no problem found. This problem has continued with the truck since that time. The truck has been in service on 4 different occasions, and the dealership reports that they have fixed the problem by replacing the wiring harness, replacing broken wires, replacing wiring that is broken inside insulation etc. This has not resolved the problem to date. The most recent incident occurred when the assistant service manager from the dealership took the truck out for a test drive (for a total of 120 miles), and he reported that the truck never lost power. I picked up the truck and drove it home and later that evening was driving the truck at approximately 45 miles per hour, when the truck began to lose power. Several times when this has occurred, I have narrowly avoided being hit by other vehicles on the road because the truck loses all power within 20 seconds.

4 Wiring problem

Failure Date: 08/11/2006

Left turn signal causes the turn signals to act as hazard signals preventing other drivers from knowing the truck is turning left. There is a know recall coering this issue with 03 suvs and trucks, but chevy states it does not effect my truck. Here is the recall from the internet. " on certain trucks and sport utility vehicles, the driver wishing to signal a turn by moving the directional signal lever, (up or down) may cause the front marker/turn lights and rear turn lights to flash in a manner similar to hazard warning, rather than flashing on the desired side only. Defect consequence: the driver may not be able to clearly signal their intentions to turn, change travel lanes, or potentially warn others of an impaired vehicle operating condition increasing the risk of a crash. Remedy: dealers will replace the suspect flasher modules with a new flasher module designed with sealed relays and more durable contact material inside of the relays free of charge. The recall began on August 4, 2005. Isuzu began mailing owner letters on August 4, 2005. Owners may contact Chevrolet at 1-800-630-2438, GMC at 1-866-996-9463, isuzu at 1-800-255-6727, Buick at 1-866-608-8080, and Oldsmobile at 1-800-630-6537. Notes: general motors corp. , 05044.

5 Wiring problem

Failure Date: 09/06/2005

Purchase truck used in June of 2005 with 49000miles truck has less then 55000miles on it. . First day ran out of gas . . Gas guage and digital reading showed 50 more miles worht of gas. Fixed thegas guage problem or so they say then oil guage started showingway past full on oil then would go back to no oil then to normal speedometer sticks and on occasion will go back to zero for the most part your start off speed is at least 40mph. . Was told by dealer it was a faulty I. C. P and that they have been having several brought into the dealership with the same problem. . I feel if this is a problem that obviously chevy is aware of it should be recalled and fixed with no out of pocket expense to its consumers. Was also told that my dash would have to be shipped out of town to be repaired and that I would be without a vehicle for awhile. . I am truly disappointed with what I thought would be the perfect truck considering its a 44000 dollar vehicle only to find out I need to spend an additional 4-500 dollars. . Wow what a disappointment:(.

6 Wiring problem

Failure Date: 07/15/2003

Consumer had headlight switch problems. Dealer notified. Gm sent the consumer a letter which stated when the headlamp/park lamps were on, the trailer light would not work. The consumer stated if the lights were turned on, the brakes would lock. The trailer had come equipped with auto headlights. The light would come on and activate the trailer brakes. The dealer refused to replace the wiring harness plug unless the consumer purchased the new model plug.

7 Wiring problem

Vehicle brake control electrical wiring, that controls the trailer failed. It engaged by itself and overheated. The dealership replaced the part. Cause unknown.




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