My 17 year old son was on the freeway and the brake pedal travelled all the way to the floor while attempting to stop. The service brake system light came on at the same time. Stopping distance was increased dramatically, by at least double. If there would have been a curve or car in front of him there would have been an accident. Parked the truck until it could be inspected and found a leak under driver side front door. All of the main brake pipes were rusted and fragile. Taking truck to dealership to have all brake pipes replaced with kit mentioned in (tsb) 13-05-22-001. I am very disappointed that gm is fighting a recall by sighting the fact that there are two different brake systems and it is not a safety issue. What if the rusted brake lines for both systems failed. At the very least it seems that having your stopping distance increase by almost double with out warning is a safety issue.
The worst 2003 Chevrolet Avalanche problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes81
- Electrical42
- Airbags14
- Transmission14
- Acceleration11
- Visibility10
- Body9
- Engine8
- Steering8
- Lights7
- Suspension7
- Tires7
- Fuel system5
- Seats2
- Driver assistance1
- Locks1
- Seat belts1
Specific symptoms reported on the 2003 Chevrolet Avalanche
Recalls 4
Seat belts: rear/other
- What is wrong
- 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. Appropriate use of a child seat or booster seat, as recommended for small children, does improve the fit condition for this user group. In addition to instructions on proper infant and young child restraint (with child seats or boosters), special verbiage for restraining older child is included in the owner's manual. Also, the suggested seat belt fit/routing for adults, irrespective of seating position, is described in the owner's manual text.
- Risk
- A lap portion of the seat belt routing that is not low and snug on the hips can allow the lap belt to ride up on an occupant's abdomen instead of fitting low around their hipbones, and therefore, can expose them to more risk of abdominal and internal organ injury.
- 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. Owners may contact cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438, gmc at 1‑866‑996‑9463, or hummer at 1‑800‑732‑5493.
Recall number 05V163000 · Recall details
Structure: body: tailgate: hinge and attachments
- What is wrong
- 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.
- Risk
- Anyone sitting or standing on the horizontal surface of the tailgate when both cables fractured could be injured by falling from the tailgate. On vehicles that have had the bumper removed, the tailgate may drop even lower. Additionally, if there is cargo on the tailgate the cargo may fall off if the support cables fracture.
- 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. Owners should contact cadillac at 1‑866‑982‑2339, chevrolet at 1‑800‑630‑2438 or gmc at 1‑866‑996‑9463, or visit www.mygmlink.com, and enter your vehicle identification number.
Recall number 04V129000 · Recall details
Service brakes, hydraulic
- What is wrong
- 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.
- Risk
- Consequently, the valve o-ring seal may fracture. Steering efforts may be slightly increased while braking or parking. Under certain driving conditions, a fractured seal may require a slight increase in the applied brake pedal effort to achieve the same vehicle deceleration rate as prior to the seat fracture.
- 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.
Recall number 04V045000 · Recall details
Fuel system, gasoline: storage: tank assembly
- What is wrong
- 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. If the mid-frame cross member tears during frontal impact and produces a sharp edge, contact of the sharp edge with the fuel tank could result in a puncture of the fuel tank and possible fuel leakage.
- Risk
- Fuel leakage, in the presence of an ignition source, could result in a fire.
- 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 reasonable time should contact chevrolet at 1‑800‑222‑1020 or gmc at 1‑800‑462‑8782.
Recall number 03V019000 · Recall details
See all 4 recalls for the 2003 Chevrolet Avalanche
Defect investigations
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 vehicles manufactured and sold by General Motors Corporation (GM).On July 2, 2010, ODI received GM's response to an information request, which included GM's assessment of the frequency and safety consequences of the alleged defect. GM stated that:(1) the brake system of the subject vehicles is split front/rear and should a brake pipe suddenly fail for any reason, the affected vehicle would be capable of stopping with the pressure supplied by the remaining circuit; (2) the subject vehicles were designed to meet the hydraulic circuit partial failure requirements of Federal Motor Vehicle Safety Standards 105 and 135, Light Vehicle Brake Systems; and (3) should a brake fluid leak occur for any reason, the brake system malfunction indicator lamp (MIL) would illuminate and warn the driver before the brake fluid level was low enough to cause a loss of line pressure.ODI's and GM's analysis indicates that 85 percent of the complaints occurred on vehicles used primarily in States that use salt on the roads during Winter months (Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin).Overall the complaint rates per 100,000 vehicles for Salt Belt States is 43.0 and Non-Salt Belt is 3.0.In approximately 25 percent of the complaints the brake pipe failure occurred suddenly, with no warning (i.e., no MIL, Brake Fluid Loss Warning), and resulted in extended stopping distances.In 30 of these the increase in stopping distance that resulted was a factor in the crash and in 10 others the vehicle was intentionally steered off the road or into another lane of travel in order to avoid a crash.This investigation has been upgraded to an Engineering Analysis (EA11-001) for subject vehicles sold or currently registered in Salt Belt States to further assess the scope, frequency and safety risks associated with sudden failures of corroded brake pipes that can result in decreased brake effectiveness. ODI will continue to gather information on subject vehicles outside the Salt Belt as well.
PE10010
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.
DP05009
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. Gm made additional changes in november 1999, february 2000, may 2001, and february 2004.odi will continue to monitor this problem and will take further action, if warranted, in the future.for further technical details see the attached engineering analysis report.
EA04012
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 04v‑129, but are not being addressed by campaign o4v-129.odi is initiating a separate investigation to address these vehicles.the complaint-injury-fatality statistics summarized above pertain to model year 2000-2004 vehicles. The complaint-injury statistics for model year 1999 and earlier vehicles are summarized on the opening resume for that investigation.
EA04005
Technical service bulletins for the 2003 Chevrolet Avalanche 349
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This Preliminary Information communication advises the technician that if OnStar is unable to configure...
- This Preliminary Information communication provides information to the technician about vehicles that may...
- This preliminary information communication provides information to the technician about finding needle...
- This informational bulletin provides information on Part Restriction and Ordering Process Information for...
- This Preliminary Information communication provides information to the technician about gasoline powered...
- This informational bulletin provides information to advise dealers about seat belt buckles not operating...
- This informational bulletin provides technicians with information regarding automatic transmission oil...
- This informational bulletin provides dealership personnel with information on flexible fuel vehicles...
- This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
- This Preliminary Information communication provides information to the technician about connectivity...
2003 Chevrolet Avalanche fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 5.3L 8‑cyl | RWD | 12-13 | 17 | 14 |
| 5.3L 8‑cyl | 4WD | 12-13 | 16-17 | 13-14 |
What 2003 Chevrolet Avalanche owners say
Most recent owner complaints, unedited.
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.
Brake line failure: I had a ruptured steel break line failure while applying normal breaking pressure on the pedal. After further inspection of break lines, I found all break lines were rusted and in danger of also rupture.
The other day I started noticing that when I turn right (or left in reverse) at a low rate of speed the vehicle makes a clunking noise and my steering is affected. I started looking online for a remedy to this problem and found that several people had the same problem and did not know where to report it. I don't feel it is fair that as the consumer that I am responsible for a design flaw by gm. I also don't feel its fair to have to spend up $400 when its all said and done each time that it will have to be repaired.
Tl* the contact owns a 2003 chevrolet avalanche. While driving at an unknown speed, the brake pedal extended to the floor when it was depressed. The contact discovered that the brake lines near the driver side door were rusted and corroded, and brake fluid had leaked from the vehicle. The contact indicated that the brake lines had been previously replaced on the vehicle due to rusting and corrosion. The manufacturer was not notified of the failure. The VIN was not available. The failure mileage was 150,000.
Tl* the contact owns a 2003 chevrolet avalanche.while at a traffic light, the contact could not depress the brake pedal. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The VIN was not available. The approximate failure mileage was 115,000.
Vehicle experienced complete brake failure upon slowing for a traffic light. This was compounded by the downhill orientation of the road surface. Left roadway to avoid collision with tractor-trailer. There was no warning or indication of an impending brake failure. No indication that any part of the braking system was still functioning. It was discovered upon inspection that the brake lines were excessively corroded compared with other body and engine components. Metal composition of brake tubing seems very prone to corrosion. Complete brake line replacement of the entire system is now necessary.
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. Lucky again...the parking lot was nearly empty and very long. After about 4-500 ft I was going slow enough that I was able to jam the transmission into park. There was no warning of this failure. The lines were not leaking. I have now read online that gm has had many complaints of rusted lines on their pickups suddenly failing. This could have been a life threatening situation. Brake lines should not suddenly fail. They should last the life of the vehicle. Non-corrosive nickle copper brake lines exist that do not rust. These should be mandatory on all vehicles.
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.
Tl* the contact owns a 2003 chevrolet avalanche 1500. The contact stated while driving approximately 5 MPH, the drivers seat reclined independently, which caused the contact to crash with another vehicle. A police report was filed. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was unknown.
Compare the 2003 Chevrolet Avalanche
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Questions about the 2003 Chevrolet Avalanche
Is the 2003 Chevrolet Avalanche reliable?
Owners have filed 204 complaints about the 2003 Chevrolet Avalanche, 1.8 times a typical Avalanche model year.
What is the 2003 Chevrolet Avalanche year score?
The 2003 Chevrolet Avalanche scores 51 out of 100 (below average). The score compares it with the other model years of the Chevrolet Avalanche: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2003 Chevrolet Avalanche?
Brakes, with 81 complaints, typically around 106,000 miles. Next is electrical (42).
How many recalls does the 2003 Chevrolet Avalanche have?
4 recalls, covering seat belts, structure and service brakes, hydraulic.
Was there a recall on the 2003 Chevrolet Avalanche brakes?
Yes, 1 recall: 04V045000. Check your VIN to see if your car still needs the free repair.
What year does the Chevrolet Avalanche have bad brakes?
The Chevrolet Avalanche model years with the most brakes complaints are 2002 (200 complaints), 2003 (81 complaints) and 2004 (42 complaints).
What gas mileage does the 2003 Chevrolet Avalanche get?
Official estimates for the 2003 Chevrolet Avalanche range from 13 to 14 mpg combined. The most efficient version (5.3L 8-cyl, RWD) gets 12-13 city and 17 highway.
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