Most common 2003 Chevrolet Avalanche 1500 problems
Share of the 182 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Chevrolet Avalanche 1500 complaints by model year
Best Avalanche 1500 years: 2010, 2012, 2006. Years to avoid: 2003, 2005, 2004, 2002, 2007. Compare all years →
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2003 Chevrolet Avalanche 1500:
Brake line corrosion failure
On January 11, 2011, ODI opened EA11-001 to investigate allegations of premature brake line corrosion failure in model year (MY) 1999 through 2003 General Motors (GM) full-size pickup trucks and sport utility vehicles sold or registered in the following region of the United States that NHTSA has viewed as salt states for investigations of corrosion related issues:Connecticut, Delaware, District of Columbia,…
What 2003 Chevrolet Avalanche 1500 owners say
Electrical system all 84 →
Tl* the contact owns a 2003 Chevrolet Avalanche 1500. While driving 60 MPH, the vehicle failed to accelerate. The instrument panel gauges fluctuated independently and several warning indicators illuminated. The vehicle also stalled. The contact was able to restart the vehicle, but the failure recurred multiple times. The vehicle was taken to an independent mechanic who diagnosed that the vehicle had electrical issues. The vehicle was not repaired. The manufacturer was not made aware of the issue. The approximate failure mileage was 230,000.
I am a new owner of a 2003 Avalanche, I was satisfied with my purchase but my soonroof falls under the appropriate serial numbers (6,000,000-6,300,000) recall states that it May be covered by the company webasto hollandia. Vehicle is fine to drive places but sunroof must be fixed for coming winter. It worries me as there's a slight danger of it causing a road hazard if it were to fall out.
Brakes all 53 →
The vehicle was stopped at a 2-way stop. Upon turning right, my foot went from the brake to the gas pedal and got hooked on a piece of metal extending from the arm of the accelerator. This caused my foot to be trapped below the brake pedal but attached to the gas pedal. The vehicle spun back and forth while trying to get my foot off the accelerator. I hit a truck coming from the opposite direction from which I was turning pinning it to the guard rail. Although both trucks had stopped, the tires on my truck were still spinning because my foot was still hooked on the accelerator and wedge below the brake pedal. Only after I turned the key off could I put the truck in park. In order to get out of my truck I had to unlace my shoe and pull my foot out, then pry it off the side of the accelerator, leaving a hole in the side of my shoe.
I was coming down the hill and saw 2 vehiles stopped one was going to turn once traffic was clear. And I started slowing down almost to a stop on a hill and I got about 2 car lenghts away still stepping on my brakes and all the sudden my brake light came on. A warning came up and said service brake system when I slambed into the rear end of the car in front of me who intern hit the car infront of them. I had just replaced my breaks and roters 45 days before this. I blew the brakeline on the front. July 2012 I blew a brakeline. Noone was injured that time and also blew a brake line August 2013. So for the 3 time blowing a brakeline there is something wrong. I lived in the north carolina until moving to west virginia in 2012 and this has happen every year since I moved north.
Air bags
My airbags deployed as I slid into a vehicle in front of me. I was in number to number traffic and I tried changing lanes. My front left bumper tapped his rear right bumper. The other vehicle was scratched.
I have complained before, want to know why this has not been recalled. Light came on for no reason. Wasn't in any kind of an accident. It is defective and no one will help get it fixed. There already is TSB from 2006. We moved from pennsylvania to florida and after a couple of months it came on and stayed on.
2003 Chevrolet Avalanche 1500 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.3L 8-cyl | 4-speed automatic | RWD | 12 / 17 / 14 |
| 5.3L 8-cyl | 4-speed automatic | 4WD/AWD | 13 / 17 / 14 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2003 Chevrolet Avalanche 1500 a good car?
Based on 182 owner complaints filed with NHTSA, the 2003 Avalanche 1500 rates avoid: 4.0× as many complaints as a typical year of the Avalanche 1500 at the same age. It is one of the Avalanche 1500 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2003 Chevrolet Avalanche 1500?
The electrical system — 84 complaints, 46% of all complaints for this model year, most often about instrument cluster/panel. Next are the brakes (53) and air bags (12).
How many recalls does the 2003 Chevrolet Avalanche 1500 have?
NHTSA lists no recalls for the 2003 Chevrolet Avalanche 1500. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Chevrolet Avalanche 1500?
The best years by complaints, compared at the same age, are 2010, 2012 and 2006. Years to avoid or approach with caution: 2003, 2005, 2004, 2002 and 2007. See the full Chevrolet Avalanche 1500 years comparison.
At what mileage do 2003 Chevrolet Avalanche 1500 problems happen?
The median mileage reported in complaints is about 89,000 miles; 14% of problems with a recorded mileage started before 50,000 miles.
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.