2005 Chevrolet Trailblazer EXT 370 engine problems

Filed Dec 29, 2019 · Engine, Fuel system · 109,000 miles · IN

Stop it starts jerking and check engine light flashs head went bad at 109 thosand miles

Filed Feb 17, 2016 · Engine · 80,000 miles · CA

My 05 trailblazer keeps shutting off while driving down a city street. In a 2-mile stretch it shut off 5 times with complete loss of steering control almost causing a serious accident. The vehicle trembled and then turned off. It has shut off on me while driving on three other occasions on previous years but it only occurred once and then stopped on those occasions.

Filed Jun 23, 2014 · Engine, Fuel system · 80,000 miles · CA

Gas gauge, shoes it has a different amount of gas.. When turned off it can say its at 1/2 a tank, then when the engine is on it shows that car has 1 1/2 tanks of gas. Its not consistent and I always have to guess how much gas is in the car. Also the check light is always on. The gas tank has issues too.

Filed May 20, 2014 · Engine · 77,000 miles · CA

While driving my 2005 chevytrailblazer it just turned off without warning, as soon as it did the check engine light and reduced engine power light came on(instrument panel and radio were still working). I tried a few times to turn it back on but it failed to restart. 15 minutes later it restarted and I was able to drive to my workplace a few blocks away, by the time I used my vehicle again(about 3hrs later) both engine lights had turned off. We took our vehicle to an auto repair shop to see if they could diagnose the problem, they recommended that we take it to a gm dealership because there were numerous codes showing up on the diagnostic machine. We took it to a local gm dealership in indio, ca (coachella valley buick gmc). They too said that numerous codes were coming up but after 1 1/2 days with our vehicle they stated that the ignition switch needed to be replaced. We took it in to auto repair shop and he performed the repair that gmc stated was needed. Upon picking up the vehicle from the repair shop I drove home, as I was pulling into the garage it turned off, a repeat of the same issue we were having before replacing the ignition switch. Since this was on sat,05-03-2014 we had to wait until the afternoon of mon, 05/05/2014 to take it back to the dealership, we informed them that we had their recommended repair done and that the vehicle continued to turn off. The following day they informed me that they could not replicate the problem and that we could pick up the vehicle. On thurs., 05/08/2014 the vehicle turned off while making a left turn. 20 minutes later it turned back on and he drove it back to the dealership, they then had the vehicle until 05/12/2014; again they stated that they could not replicate the problem. It has continued to repeat this same problem, again without any warning or indication that there is a problem.

Filed Jul 16, 2012 · Engine · 109,000 miles · MS

Exhaust manifold developed a leak while driving on interstate 40 between nashville and jackson tn. Driver and passengers developed headaches and drowsiness before leak was discovered by sound during stop for gas.

Filed Aug 9, 2011 · Engine · ME

Exhaust manifold on the 2005 chevrolet trailblazer ext with 4.2 engine leaks exhaust fumes into the air and into the interior of the vehicle creating an emissions problem as well as a health hazard of driver and passengers of the vehicle breathing the fumes. Replacement parts are near to non existent since there are apparently so many of the vehicles with his problem. I have been looking for a replacement part for 3 weeks and nothing yet. Have been told by parts stores, and dealerships that they do not have them and their distribution centers do not have them either, neither do the online websites. There are no parts available in junk yards either. No options at the moment and vehicle will not pass current state inspection.

Filed Sep 11, 2010 · Engine · 52,800 miles · 00

My 05 chevy trailblazer ext lt with 4.2 l cracked its exhaust manifold at 85,000 kms. Gm dealership in 2 different cities refused to repair under warranty. This truck was purchased as a new used demo from the original dealership with 14,000kms may 06.

Filed Feb 22, 2010 · Engine · 63,000 miles · WA

Fan motor only works on 1-4 settings, after a few weeks no setting works. Inspecting fan blower found burnt wires leading to the resistor, external before harness. New resistor and harness are needed to remedy.

Filed Feb 15, 2010 · Electrical, Engine · 33,333 miles · FL

My chevy trailblazer 2005 model accelerated in the parking lot as I was turning it on and put it in drive with my foot over the brake, it accelerated and jumped 3 feet before I stopped it. I am very thankful, no car was in front of me!

Filed Jul 27, 2009 · Engine · NY

Lights dimming and brightening, engine coils misfiring and needing to be constantly replaced (2nd time) and fuel gauge constantly stating tank is empty (many, many complaints about this; check the blogs).