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 Suburban owners, lightly cleaned up (personal details are redacted by NHTSA).
Odometer Fraud. The contact purchased a 2003 Chevrolet Suburban. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 291,000 and at the time of inspection, it was discovered that the odometer was tampered with, and without disclosure of these modifications.
I am a teacher and got a call in my classroom that my Suburban was on fire parked in the parking lot. The fire department was called and when I got outside, sure enough there was smoke all in the Suburban and smoke coming from the roof of the vehicle (not the hood). When the fire department arrived, they entered the vehicle, disconnected the battery, and proceeded to tear out my rear headliner to extinguish the electrical fire that was occurring. My insurance company had the vehicle towed and it was deemed reparable, which I was not too happy about seeing as we don't really know the cause of the fire beyond electrical. The fire originated near the rear dome light and burned the headliner and melted the paint off the roof the vehicle. …
Saturday, I was driving approximately 45 to 50 MPH on a split two lane road to pick up my grandchildren and all of a sudden my instrument panel stopped working. All gauges went to 0. There was no digital readings either. It just went dead. Pulled over and turned the vehicle off and back on, nothing changed. Plugged my garmin GPS in for my speed guide and filled my gas tank so I knew that it was full. Called mechanic to bring vehicle in for him to check out on Tuesday. Tuesday, (today) on my way to work, driving on 4 lane interstate, 60 to 70 MPH, all of a sudden, all of the gauges and digital readings came on and began working correctly. I still took my vehicle to the mechanic, he stated that he will look at it and call me later. I depend on my car, just like everyone else. I can not just go out and buy a new one every time something goes wrong. …
The rear lift tailgate and window will not unlock when using the remote key button, or when using the unlock button on the drivers door arm rest. There is no manual key lock for the rear lift tailgate or window, nor any inside button to manually unlock the tailgate. When sleeping in the rear of the Suburban you have do way to exit the car except by climbing over seats and exiting using the front doors. Driving the car and stopping to try to unlock the rear lift gate will eventually allow you to unlock the tailgate, some times after many tries. Also it some times will unlock when alternating between the driver door unlock button and the remote unlock button. This could be a dangerous problem . This failure of the rear tailgate is a common problem with suburbans. …
Vehicle suddenly started going into reduced power mode and providing an error code indicating a problem with the throttle control sensor. From the hundreds of online posts (some by GM mechanics) this is an ongoing problem with many 2003-2008 trucks and suvs made by GM. When I began trying to repair this problem myself, I found out from my local Chevy parts department that "they can not keep these throttle control assemblies in stock because we are replacing so many of them..." there seems to be a know problem that GM is not adequately being proactive about. This happens while driving highway, local streets and at startup. This becomes a serious safety issue when the vehicle goes into reduced power mode while the vehicle is in traffic.
All gauges in instrument cluster went low or no reading, including speedometer, fuel, tachometer, temp. The repair was done at willie's auto repair inc.at 901 s. Cliff ave. In sioux falls, sd. The GM remanufactured instrument cluster part was $453 and labor was $126, with tax the total cost of the repair was $613 which GM should be paying for !! I know several people at work that have had to have this done to their GM trucks and tahoes, suburbans. This is so widespread there should be a class action suit !! You know the component they replace can't be much on a board in these "remanufactured clusters" GM needs to replace these at their expense !!!
Revving of engine to point of screeching tires. Sometimes feeling of being in neutral for a second then clunk in tranny/rear end? Acts as engagement of cruise control increasing speed, not able to disengage by hitting brake. Computer did not show anything. Next time putter "locked out" tech's. Puter replaced. Worked good for two weeks. Engine revved, hit patch of ice, totaled out z-71. Thank god, no injuries. Fighting it for appx 16000 miles. 72000 to 88000.
Tl* the contact owns a 2003 Chevrolet Suburban. The contact stated the instrument cluster inadvertently disabled. The vehicle was taken to the dealer where it was diagnosed that the instrument cluster needed to be replaced, but was not repaired. The manufacturer was not notified of the failure the failure mileage was 85,000. Updated 02/14/17 consumer stated techometer, oil pressure gauge. Gear indicator lights offer lights stopped working. Updated 7/16/18
Tl* the contact owns a 2003 Chevrolet Suburban. While driving at 50 MPH, the gauges on the instrument panel failed. A month later, the failure recurred and all the meters, gauges, and warning lights on the instrument cluster panel failed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 125,000.
Tl* the contact owns a 2003 Chevrolet Suburban. At various times, the ignition switch failed and all the warning indicators illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 225,000.
Electrical complaints in other Suburban years
Frequently asked questions
How common are electrical problems on the 2003 Chevrolet Suburban?
NHTSA has 81 complaints about the electrical system of the 2003 Chevrolet Suburban, 27% of the model year's 301 complaints. The component named most often is instrument cluster/panel (40 mentions).
Is there a recall for 2003 Chevrolet Suburban electrical problems?
No. NHTSA lists no electrical system recall for the 2003 Chevrolet Suburban, though it has 5 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 Suburban electrical problems start?
Half of the complaints with a recorded mileage happened before about 77,000 miles, and 12% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 2 fires and 1 injury 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.