Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2003 Chevrolet Silverado owners, lightly cleaned up (personal details are redacted by NHTSA).
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.
General motors have a faulty neutral safety shift switch on their Silverado 1500 1/2 ton pickups that May lead to failure and cause the truck to burn. I have brought this to the attention of general motors but they ignored me. My truck burned and we put it out. I see others that have burned and I bet the neutral safety switch is what started it. If you were to investigate how many 03 (maybe newer maybe older) have burned you will find the cause in this switch.
On January 5, 2008 I arrived home at 11:30 pm and parked my truck in the garage attached to my house. I went to bed and at around 2:00 am I smelt smoke. I walked through the house checking rooms, when I got to the screen door to the garage the handle was hot. I then went out my front door and called 911. The truck was a loss and part of my garage. In less then 11 months this is the 2nd Chevrolet/Silverado that I have owned that has burnt.
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.
Tl* the contact owns a 2003 Chevrolet Silverado. While driving at various speeds, the instrument panel dimmed and prevented the contact from reading any of the gauges. The vehicle was taken to the dealer where it was diagnosed that the instrumental panel connectors needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was 154,289.
Tl* the contact owns a 2003 Chevrolet Silverado. While driving at approximately 60 MPH, all the gauges on the instrument panel seized. The contact had to maneuver to the side of the road where the vehicle was started after five minutes. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 150,000.
Tl* the contact owns a 2003 Chevrolet Silverado. While driving approximately 40 MPH, the vehicle stalled without warning and failed to restart. The vehicle was towed to the contact's residence. The vehicle was taken to an independent mechanic. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 227,792.
This is the second of three fatal collisions investigated this year by my office involving Chevrolet pickups that caught fire after being involved in frontal collisions. This was an off set head on, passenger side to passenger side. Passenger in pickup was pinned in vehicle due to crush and consumed by fire.
Vehicle caught fire while parked in the driveway. (nar) fire was due to a mechanical and/or electrical problem with the vehcle. The fire not only destroyed consumer's vehicle but damaged the siding of the house.
After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. Fire melted all electical lines, destroyed hood and windshield. Weather was perfect, air conditioning May have been on.
Electrical complaints in other Silverado years
Frequently asked questions
How common are electrical problems on the 2003 Chevrolet Silverado?
NHTSA has 116 complaints about the electrical system of the 2003 Chevrolet Silverado, 17% of the model year's 695 complaints. The component named most often is instrument cluster/panel (46 mentions).
Is there a recall for 2003 Chevrolet Silverado electrical problems?
No. NHTSA lists no electrical system recall for the 2003 Chevrolet Silverado, though it has 6 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2003 Chevrolet Silverado electrical problems start?
Half of the complaints with a recorded mileage happened before about 54,000 miles, and 13% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 8 fires and 1 injury and 1 death to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.