2003 Chevrolet Trailblazer 360 problems

General information about Chevrolet-Trailblazer 360
Overview of popular issues

The Chevrolet TrailBlazer (also known as Trailblazer) is a mid-size SUV produced by Chevrolet, a division of General Motors. The nameplate was first used in North America from 2001 to 2008; in 2009, it was replaced by the Traverse, as a crossover SUV. In 2011, production of a newly-redesigned version of the Trailblazer for the Asian and Brazilian markets began.

Blazer trim line (1998)

The TrailBlazer name was first introduced for the 1999 model year as an upscale trim level of the compact 4-door Chevrolet S-10 Blazer. It offered additional features on top of the previously top-of-the-line Chevrolet S-10 Blazer LT trim level, including an AM/FM stereo with single-disc CD player and optional remote cassette player, OnStar, color-keyed front and rear bumpers, side cladding, a leather-wrapped steering wheel, upgraded alloy wheels, a full-size spare tire and wheel, and upgraded cloth seating surfaces with power front bucket seats. Options such as a Bose premium sound system, leather-trimmed seating surfaces with heated front seats, power sunroof, and gold accents for the exterior emblems were all available for the original TrailBlazer trim package. The TrailBlazer trim was discontinued after 2001, when an all-new TrailBlazer model was introduced as a mid-size SUV. Production of the S-10 Blazer overlapped until the 2005 model year.

First generation (KC; 2001)

The first-generation TrailBlazer is based on a truck platform officially known as GMT360, with all models having four-wheel-drive layout as an option with both automatic engagement and the more traditional "Auto," "2-High," "4-High," and "4-Low" gearings, except the SS model which features an all-wheel-drive system. The TrailBlazer features an independent front suspension, and a five-link rear suspension. A G80 locking rear differential is available as an option on all models except for the SS, which has a G86 LSD as standard. An LTZ trim level had upgraded interior features (leather), upgraded sound system (Bose), and alloy wheels. All TrailBlazers came factory-equipped with a detachable towing hitch.

The TrailBlazer was updated in 2005 for the 2006 model year. An updated front fascia on all models (except for the base version) and new interior trim were included with the refresh. The SS received trim-specific front and rear fascias plus color-matched side skirts.

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Common 2003 Chevrolet Trailblazer 360 problems

The 2003 Chevrolet Trailblazer has been reported to have several common problems based on complaints from owners. Here is a detailed list of these problems:

Fuel System Issues: This is one of the most common problems reported by Trailblazer owners. The fuel system has been reported to have several issues, including fuel pump failures, which can cause the engine to stall or fail to start.

Electrical System Issues: The electrical system in the Trailblazer has been reported to have several issues, including problems with the ignition switch, instrument cluster, and electrical system components. These issues can cause the vehicle to stall or fail to start, and can also lead to electrical system failures.

Visibility Issues: The Trailblazer has been reported to have visibility issues, including problems with the windshield wipers and defroster/defogger/HVAC system. These issues can make it difficult for drivers to see in adverse weather conditions, which can lead to accidents.

Power Train Issues: The Trailblazer's power train has been reported to have several issues, including problems with the transfer case and hydraulic power assist system. These issues can lead to a loss of power and difficulty controlling the vehicle, which can be dangerous.

Airbag Issues: The Trailblazer's airbag system has been reported to have several issues, including problems with the frontal airbags and sensor/control module. These issues can lead to airbags failing to deploy in the event of a crash, which can increase the risk of injury.

Tire Issues: The Trailblazer's tires have been reported to have several issues, including problems with the multi-piece wheels and tire assembly. These issues can lead to tire blowouts and potential accidents.

Exterior Lighting Issues: The Trailblazer's exterior lighting system has been reported to have several issues, including problems with the headlights, brake lights, and service brakes. These issues can make it difficult for other drivers to see the Trailblazer, which can lead to accidents.

Fuel System Delivery Issues: The Trailblazer's fuel system delivery has been reported to have several issues, including problems with the fuel pump and delivery hoses, lines, and piping. These issues can lead to fuel leaks and potential fire hazards.

Engine and Engine Cooling Issues: The Trailblazer's engine and engine cooling system has been reported to have several issues, including problems with the cooling system fan and engine speed control. These issues can lead to engine overheating and potential engine failure.

These are some of the most common problems reported by 2003 Chevrolet Trailblazer owners. It is important for owners to be aware of these issues and to have their vehicles inspected and repaired by a qualified mechanic to ensure their safety and the safety of others on the road.

What problems do 2003 Chevy Trailblazers have?

How many miles do 2003 Trailblazers last?

For those wondering how long a Chevy Trailblazer will last, owner reviews across sites like Vehicle History and J.D. Power, and online forums like TrailVoy, consistently boast 150,000-200,000 miles. That equates to about 12.5-17 years of service driving 12,000 miles annually.

What are the bad years for Chevy Trailblazer?

Key Points. Considering reliability, cost, features, and more, the best years for the Chevy Trailblazer include 2006, 2008, and 2009. Be cautious of Trailblazers from 2002-2005, because they have a worrying number of recalls and registered complaints.

Is there any recalls on a 2003 Chevy Trailblazer?

There are 9 recalls that may affect your 2003 Chevrolet Trailblazer. Check your 2003 Chevrolet Trailblazer for safety recalls and get them fixed for free at a Chevrolet dealership near you.

What problems do 2003 Chevy Trailblazers have?

How long can a 2003 Chevy Trailblazer last?

Most sources will estimate that the 2003 Trailblazer should last around 200,000 with adequate maintenance. With excellent maintenance you'll do a little more, of course, and if the previous owner was lax, you might not hit that number.

What are the bad years for Chevy Trailblazer?

Is the Chevy Trailblazer a reliable car?

The 2023 Chevrolet Trailblazer has a predicted reliability score of 86 out of 100.

2003 Chevrolet Trailblazer 360 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2003 Chevrolet Trailblazer 360.

You can leave your car complaint via the special form below.

Additional sources

More sources of information about 2003 Chevrolet Trailblazer 360 problems:

5.3 reliability | Chevy TrailBlazer, TrailBlazer SS and GMC Envoy ...

https://www.trailvoy.com/threads/5-3-reliability.70869/

Mar 7, 2010 ... ... common problems on the 360 series, except on the 5.3 V8 engine. I have a few questions though! 1) Do all of the 2006+ 5.3's have DOD? What ...

The New Guy | Chevy Trailblazer SS Forum

https://www.tbssowners.com/threads/the-new-guy.244718/

May 2, 2022 ... Trailblazer/GMT 360 ... Belltech Complete Lowering Kit for 2002-2009 Chevy Trailblazer/GMC Envoy/2003-2006 Chevy SSR ... New Guy Looking To Buy - ...

Having 4WD(4x4) issues? Look inside! | Chevy TrailBlazer ...

https://www.trailvoy.com/threads/having-4wd-4x4-issues-look-inside.81739/

Dec 11, 2010 ... Information in this thread applies to 360/370 trucks with selectable 4WD functions (TrailBlazers, Envoys, Ascenders?). Trucks with non ...

2002 Chevy Trailblazer Common Problems : r/MechanicAdvice

https://www.reddit.com/r/MechanicAdvice/comments/oigvdg/2002_chevy_trailblazer_common_problems/

Jul 12, 2021 ... Easy enough to swap with a 2003 from the junkyard but can cause weird problems. The front wheel bearings are horribly designed. I've lost ...