2003 Chevrolet Trailblazer ext 370 problems

General information about Chevrolet-Trailblazer ext 370
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 ext 370 problems

The 2003 Chevrolet Trailblazer EXT 370, a mid-size SUV produced by Chevrolet, has been reported to have several common problems based on complaints from owners.

One of the most frequently reported issues is related to the engine, specifically the rear main seal. According to the National Highway Traffic Safety Administration (NHTSA) report, a vehicle started leaving spots of oil on the ground overnight. While driving to work, a bluish cloud of smoke was trailing behind the vehicle. Upon inspection, it was found that the leaking rear main seal was the cause of the problem. This issue is a known problem with General Motors' 5.3 liter engines, and multiple forums have several people complaining about the same issue.

Another problem reported is related to the fuel system. The 2003 Chevrolet Trailblazer EXT 370 has been subject to eight recalls for fuel system issues, including fuel leaks and fuel system fires. These recalls affect various components of the fuel system, such as the fuel tank, fuel pump, and fuel lines.

The 2003 Chevrolet Trailblazer EXT 370 has also been reported to have issues with the electrical system. According to the NHTSA report, there have been complaints about the instrument cluster/panel, ignition switch, and exterior lighting. These issues can cause problems with the vehicle's electrical system, including malfunctions of the instrument panel, ignition switch, and exterior lighting.

The 2003 Chevrolet Trailblazer EXT 370 has also been reported to have issues with the transmission. According to the NHTSA report, there have been complaints about the transmission, including transmission failure and transmission slipping. These issues can cause problems with the vehicle's drivability and can lead to expensive repairs.

Finally, the 2003 Chevrolet Trailblazer EXT 370 has been reported to have issues with the brakes. According to the NHTSA report, there have been complaints about the anti-lock brakes, including faulty speed sensors, low brake fluid, and total brake failure. These issues can cause problems with the vehicle's braking system and can lead to safety hazards.

In conclusion, the 2003 Chevrolet Trailblazer EXT 370 has been reported to have several common problems based on complaints from owners. These problems include engine issues, fuel system issues, electrical system issues, transmission issues, and brake issues. It is essential to address these issues promptly to ensure the vehicle's safety and reliability.

2003 Chevrolet Trailblazer ext 370 engine

What problems do 2003 Chevy Trailblazers have?

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.

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.

What problems do 2003 Chevy TrailBlazers have?

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.

Is a 2003 Chevrolet Trailblazer a good car?

It's worth the money. Though neither fancy nor flashy, the TrailBlazer LS feels substantial, more of a silent companion than a four-wheeled diversion. Given the GM models the TrailBlazer is spawning, it's obvious they're built on a solid foundation.

How long do 2003 Trailblazers 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.

2003 Chevrolet Trailblazer ext 370 complaints

The NHTSA has received 0 complaints about various vehicle components related to the 2003 Chevrolet Trailblazer ext 370.

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

Additional sources

More sources of information about 2003 Chevrolet Trailblazer ext 370 problems:

Fuel Leak Recall in the works Trailvoy 2002-2003 | Chevy ...

https://www.trailvoy.com/threads/fuel-leak-recall-in-the-works-trailvoy-2002-2003.22530/

Mar 16, 2007 ... General Motors had known that its 2002-2003 ... Is the proposed recall just for the Ext models in those years? ... CHEVROLET / TRAILBLAZER EXT 370 - ...

Questions on a LQ9 370 block. | Chevy Trailblazer SS Forum

https://www.tbssowners.com/threads/questions-on-a-lq9-370-block.46920/

Jun 7, 2010 ... I have found the limitations on an LS7 block--with its known trademark of thin cylinder walls. Now a true limitation to an engine block is when ...

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 ...

2005 trailblazer fuel filter location - Blazer Forum - Chevy Blazer ...

https://blazerforum.com/forum/trailblazer-gmt360-gmt370-2002-2009-tech-43/2005-trailblazer-fuel-filter-location-9119/

Mar 6, 2007 ... TrailBlazer GMT360/GMT370 (2002-2009) Tech ... 05 Chevrolet Trailblazer and Trailblazer EXT ... seems to be a common problem with the 2005 models.