Most common 2003 Chevrolet Avalanche problems
Share of the 204 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Chevrolet Avalanche complaints by model year
Best Avalanche years: 2006, 2012, 2009. Years to avoid: 2002, 2003, 2004. Compare all years →
2003 Chevrolet Avalanche recalls (4)
Seat belts › Rear/other
On certain crew cab pickup trucks and sport utility vehicles, the 2nd row center occupant seat belt routing May make it difficult to position the lap portion of the safety belt low around the hips of occupants, especially smaller occupants, seated in this position.
Remedy: Dealers will cut open the guide loop, remove a portion of the loop, and then the remaining two sides should be folded over and secured with a retainer free of charge. The recall began on July 21, 2005.
Structure › Body › Tailgate › Hinge and attachments
On certain pickup trucks and sport utility vehicles, the galvanized steel tailgate support cables that retain the tailgate in the full open (horizontal) position May corrode, weaken, and eventually fracture. If both cables fractured, the tailgate would suddenly drop and strike the top surface of the rear bumper.
Remedy: Dealers will replace the cables. Interim owner notification began on April 7, 20004. The recall began on September 24, 2004, when replacement parts were available, and will continue through October 29, 2004.
Service brakes, hydraulic
Certain sport utility vehicles, pickup trucks, and passenger vans fail to comply with the requirements of federal motor vehicle safety standard no. 135, ?passenger car brake systems.? Some of these vehicles were produced with an out-of-specification brake hydro-boost housing relief valve bore.
Remedy: Dealers are to replace the hydro-boost relief valve. The recall began on June 18, 2004. Owners should contact Cadillac at 1-866-982-2339; Chevrolet at 1-800-630-2438; GMC at 1-866-996-9463; or Hummer at 1-866-486-6376.
Fuel system, gasoline › Storage › Tank assembly
On certain pickup trucks and sport utility vehicles, vehicles, during a 30 degree left angle frontal impact of sufficient severity, a tear could develop in the mid-frame cross member at its attachment to the left frame rail.
Remedy: Dealers will install a fuel tank shield. Owner notification began February 20, 2003. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a…
NHTSA defect investigations
Federal safety investigators have looked into 4 possible defects involving the 2003 Chevrolet Avalanche:
Brake line corrosion failure
The Office of Defects Investigation (ODI) received Defect Petition DP10-003 on March 2, 2010, requesting the investigation of model year (MY) 2003 Chevrolet Silverado 2500HD 4WD pickup trucks for corrosion failures of the vehicle brake lines.DP10-003 was granted and on March 30, 2010, Preliminary Evaluation PE10-010 was opened on more than six million model year 1999 through 2003 light trucks and sport utility…
Hydraulic pump failres
GM is conducting a recall on all subject vehicles build between May 1999 and October 14, 1999.significant changes were incorporated into production in early October 1999, and vehicles built after that date have lower warranty failure rates.the complaint and warranty data appear to support the effectiveness of these changes.
Tailgate cable breakage
General motors filed a defect notice 04v-129 on March 17, 2004, which outlines a program to replace the tailgate cables installed in affected model year 2000-2004 vehicles.refer to odi's closing report for ea04-005 for additional information.odi is aware of reports of tailgate cable breakage occurring in model year 1999 and earlier vehicles.these vehicles were equipped with similar tailgate cables as addressed by…
Parking brake failure
Odi's review of complaint data received since the close of ea04-011 revealed no indication that the investigation should be re-opened.more details can be found in the federal register notice enclosed in the dp05-009 public file.odi reserves the right to reopen the investigation in the future should conditions warrant.
What 2003 Chevrolet Avalanche owners say
Brakes all 81 →
My son was driving home from ice fishing , on a hilly and curvy road when the brakes failed. He had no brakes at all , he avoid a few tree before smashing into a smaller tree just missing were his friend was seated.the truck has been very well taken care of and was in great condition. I had the truck towed to a Chevy dealer were it has about $5000 dollars in damage. I just glad my son and his didn't get hurt.
The rear brake line burst catastrophically and my brake pedal went to the floor. I was coming up to stopped cars at an intersection and had to swerve into the oncoming lane to avoid rear ending another truck. Luckily there were no cars in the lane at the time. I then had to make a sharp turn into a shopping center parking lot to avoid running through the intersection (which did have traffic). I had zero braking power whatsoever. I tried pushing down the emergency brake and it had no effect ( I later found that the emergency brake lines were frozen in a large chunk of ice near the drivers side rear wheel and would not move). The pickup bed drains down onto the lower frame in this area and that accounted for the ice buildup. I continued through the shopping center parking lot and all I could to was downshift to slow myself down. …
Electrical system all 42 →
Tl* the contact owns a 2003 Chevrolet Avalanche. While driving approximately 65 MPH, the instrument panel failed. In addition, the driver side headlight failed. The failure recurred numerous times. The vehicle was taken to an independent mechanic where it was diagnosed that the instrument panel needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The VIN was unknown. The approximate failure mileage was 70,000.
It started with the airbag light, but nobody will own up to fixing it, as we moved from pa to fl. Then the brake lines went, all of them, now with the airbag issue the PCM is sending all kinds of stupid codes like the airbag issue is affecting the whole electrical system in the truck.
Air bags
Dt: the contact stated while traveling at 60 MPH he struck a median head on and the air bags did not deploy. The vehicle was totaled. Three people sustained injuries. A police report was taken. The manufacturer has not been contacted.
Tl contact owns a 2003 Chevrolet Avalanche. The contact took the vehicle to the dealer because the air bag warning indicator was illuminated. After the vehicle was diagnosed, he was informed that the passenger side air bag was not working because the module was defective. There was also too much compression in the air bags, which caused the warning indicator to illuminate. The vehicle is no longer under warranty and the manufacturer would not assume responsibility for the repairs. They refuse to repair the vehicle for free and the contact believes it is due to a manufacturer defect; therefore, it should be repaired. The failure mileage was 78,000 and current mileage was 79,228. Updated 11/14/08 updated 11/19/08.
2003 Chevrolet Avalanche 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 a good car?
Based on 204 owner complaints filed with NHTSA, the 2003 Avalanche rates use caution: 1.5× as many complaints as a typical year of the Avalanche at the same age. It is one of the Avalanche 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?
The brakes — 81 complaints, 40% of all complaints for this model year, most often about antilock/traction control/electronic limited slip. Next are the electrical system (42) and air bags (14).
How many recalls does the 2003 Chevrolet Avalanche have?
There are 4 recalls for the 2003 Chevrolet Avalanche, the most recent from April 22, 2005 (rear/other). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Chevrolet Avalanche?
The best years by complaints, compared at the same age, are 2006, 2012 and 2009. Years to avoid or approach with caution: 2002, 2003 and 2004. See the full Chevrolet Avalanche years comparison.
At what mileage do 2003 Chevrolet Avalanche problems happen?
The median mileage reported in complaints is about 66,000 miles; 36% 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.