2003 Chevrolet Trailblazer EXT engine problems

Filed Feb 25, 2017 · Electrical, Engine · 120,000 miles · IL

Low beams intermently go off and on ! Exhaust manifold is cracked causing a leak ! All dash gauges but fuel gauge dont work !

Filed Jul 16, 2012 · Engine · 66,000 miles · NY · fire

Tl* the contact owned a 2003 chevrolet trailblazer. The contact stated that while driving 70 MPH, fire erupted from underneath the vehicle. The vehicle stalled as the contact merged to the shoulder. The contact and all of the passengers exited the vehicle as it became engulfed into flames and was destroyed. The fire department and the police were notified. A report would be available if needed. No one was injured. The insurance company was notified. The contact also stated that the vehicle was repaired for routine maintenance two months prior. The manufacturer was not notified. The failure mileage was 66,000. Updated 08-30-12

Filed Jul 19, 2010 · Engine · 100,000 miles · CA

Thermostat has failed twice during long trips. This causes the engine to run hot or cold. I am on my third one and have concluded it must be a design defect. Failure of this component may cause the engine to fail and thus strand the driver.

Filed Dec 10, 2009 · Engine · 87,000 miles · OH

I purchased a 2003 chevy trailblazer ext in june,2007. In jan of 2009 my problem first began. While driving normal speed, the service engine light sometimes comes on immediately followed by the "reduced engine power". When this happens, the car immediately loses power and the vehicles only goes around 10mph. You never know when it is going to happen. It can happen several times in a day or not at all. It is very dangerous when it happens because you can sometimes stop the traffic flow. The light will come off and the vehicle will return to normal speed if you stop the car and then restart it. It happens particularly when it is cold outside. In the morning it can happen 15-20 times before I get to work, and then in the afternoon only once or twice. I have taken it to several auto repair shops and no one seems to be able to fix it. They recommend one thing, I pay for it and then it happens again. I have had my clutch replaced and also the accelerator pedal system. I researched "chevy reduced engine power" on the internet and there are a great amount of pages of people experiencing this same problem. It appears to happen to chevy suvs, in particular the trailblazer. I don't understand how so many people can experience this same problem and there not be a recall. I have taken it to 2 chevy dealers and they don't even know what to do. I paid $18k for this vehicle in june, 2007 - I put $5k down and still owe about $10k. Chevy needs to recognize this problem and correct it. The vehicle is virtually undrivable and unsafe.

Filed Dec 8, 2009 · Engine · 89,000 miles · CO

Antifreeze is leaking from rear heater core. Caused my engine to overheat. Fluid leaks at a fairly rapid rate. In doing research I found that they changed the heater core so this repair costs an extra $500 for parts to retrofit a new heater core. If there is a flaw in the design why isn't this a recall? It could cause engine damage. I called gm with no luck.

Filed Aug 3, 2009 · Engine · 156,000 miles · 00

2003 trailblazer transmission lines. Coolant lines rusted at the factory connection. Major fluid loss, had to repair immediately.

Filed May 13, 2009 · Engine · 165,000 miles · FL

2003 chevy trailblazer transmission. . I usually have to stop, put the car in park, and then back in drive once or twice to get first gear to engage. Also, when passing or accelerating on the freeway, I am losing power.

Filed Sep 23, 2008 · Engine, Transmission · 60,000 miles · VA

Where should I start? Purchased 03 trailblazer in 2/08 w/only 60,000 miles. Has been in shop 3 months..lost count of costs. A/c and heat not working properly..no hot air; clutch fan replaced; transmission slipping; engine cuts off while at stop-light. Should I go on? You would think w/only 60,000 miles on it--it was just getting broken in. I have never been so disappointed in a truck before..now I am stuck with the truck and its payment...no more money to repair and can't afford to trade in.

Filed Jul 15, 2008 · Engine · 47,000 miles · FL

Trailblazer over heated about a year ago, ran diagnostics-changed the fan clutch assy, worked for two months. Over heated again- more diagnostics-warranty fan clutch, worked for a week- warranty fan clutch again and changed the coolant temp sensor- still over heating. Dealership wanted to change the fan clutch again- I refused because this is about to run me into the poor house.

Filed Jan 1, 2008 · Engine · OK

My 2003 tb has clicking noise and the check engine light has came on several times, about 2 or three years ago the cam sensor had to be replaced, sometimes the car will shake or rough idle. I took it to get the check engine light serviced and they said they had to order parts, after the parts did not come in, after almost a week I took my car home for the weekend. No one ever call about the parts coming in, so I called about 2 1/2 weeks later and they said the parts were in, it had been aprox. 35 days from the first visit. When I took it back I expected the car to be in the shop just a few hours to put the parts in. I checked on the car later in the day and they said they needed to keep it because it was showing a service code p0014, and they wanted to make sure that the parts ordered would fix the problem., because some newer tb's needed a new motor when showing that p0014 code. Has any one had this problem?