Eight problems related to check engine light on have been reported for the 2005 Chevrolet Trailblazer. The most recently reported issues are listed below.
Stop it starts jerking and check engine light flashs head went bad at 109 thosand miles.
Multiple times while driving the headlights will malfunction and turn on and off, at random driving speeds under many different conditions. I continued to drive the Trailblazer even after this occurred. Just not as often. If the heater was on while driving and the headlights would short the heater would stop and then turn back on. The fan turns on at random, first it turns on when driving at random times. The fan will turn on at random times with a higher speed and sound. I have had the inspection completed multiple times with a mechanic re-assuring the issue although it has been happening frequently. The check engine light is on all the time due to computer error and is a $500. 00 fix. This has all happened and been reported within the first year I bought the vehicle from kendal motors in lewiston idaho. I find that the amount of work to fix this vehicle is overwhelming and to see that this vehicle was under 100. 000 miles is financially distressing. I have already had the fuel pump portion removed and fixed twice, I had to purchase a locking cap. The stereo repeatedly jams with new cd's even.
The check engine light comes on&off a lot right after fueling, I took it to the GMC dealership&had the camshaft replaced because it kept cutting off every time I turned a curve. I tried to show or tell them about this GMC recall letter I got on my 2005 Chevrolet Trailblazer, but they said that it didn't apply because of the mileage&I told them the car is not 10yrs old& the paper is saying 10yrs/120,00 miles& for me to take it to the dealership so that the manger can send my bill & receipt in for reimbursement they wouldn't do it. I guess because I'm a woman. Driving to work on the interstate the car shut completely off. The car was still moving when all of a sudden all the lights and gage's lit up and the car cut off. It did not lock up so I was able to steer it from the middle lane of a three lane interstate highway to the grass on the side without getting killed or hurting someone else. I had just filled it up with gas with a quarter of a tank from the full line. Once I got the car to a complete stop and thanking god that this was not tragic,I put the car in park and waited a few minutes before starting it back up. It started back up as if nothing had happened. I took it to auto zone to get a free diagnostic check&it showed that nothing was wrong. A few weeks later after I would cut the car off the air conditioning would not stop&the engine light constantly comes on every other time I hit the brakes. I had to keep taking out fuse #35 to get it to stop even after the car was cut off just so the battery won't run down. Took it to the dealership and was charged an arm&leg to get it fixed. I showed them the recall letter again and they said it was too late for them or myself to do anything about it. I have all of my receipts & the letter from GMC about the recalls. Im sure my vehicle fits in there somewhere with these problems& truly would like 4 them 2 give my free car.
Sir/ MA'am, I noticed recently in the news that several gm product lines have been plagued by faulty ignition switches causing the vehicle to lose power and/or cut out. I implore you to look into the Trailblazers. I emailed gm while I was deployed (2012) and they gave me the runaround saying that it is not a documented problem, as expected. A simple internet search would show that a lot of other Trailblazer owners have bad ignition switches/ electrical issues that cause the vehicle to lose power at all speeds. My wife lost power going about 35 mph and I had my two children along with her. This is just one example, on one occasion. Granted, I do acknowledge this problem is intermittent, it still occurs at random and at all speeds. Gm tells me to go to a dealer and have them look at it. I refuse to pay gm any money to have a dealership rip me off for an ignition switch that is flawed and replace it with the same faulty oem style/model number. I have ran a scan tool looking for codes and it doesn't have any. Like stated previously, this is another line of gm that is plagued with ignition and electrical issues that gm refuses to take ownership of. The mileage I have entered is approximate. I cannot remember exact numbers, but it has happened for years, intermittently. When the vehicle has coasted to it's final destination after losing power, it starts up and drives normal again after it is put back into park. Also keep in mind that it doesn't show any check engine lights, indicating a problem or need of servicing. Again, please look into this product line as I know the result(s) will show that gm is liable and I don't want any fatalities because nobody spoke up about it.
My gas gauge always reads empty even when the car is full. Engine light always goes on and off between a matter of days. Recently my heat went out in my car we changed the resistor and found out one of the prongs were burnt out. A week later the heat went out again. Looked at the resistor and the same prong was burnt out!! I'm getting really fed up with this vehicle!.
When we bought our 2005 chevy Trailblazer we had to turn it around and take it back to the dealership. The check engine light came on. All they did was reset it. It came back on some time later, we took it back to dealership they got it worked in at the nearest chevy shop, they reset the light and we were told to buy a gascap for it. We bought the gas cap, light stayed off until now. We have taken our 2005 chevy Trailblazer to the local shop they hooked it up to the computer and found nothing wrong. So far nothing has been done, but since the light is on it is a gas guzzler with light on getting 6 miles to the gallon. With gas at 2. 59 a gallon that's not cheap. Chevrolet dealer in town says its probably the throttle body needs cleaning, and it needs a new battery. They say the throttle body is a common problem in the new models, because the gas is not fit for the newer model vehicles.
I have been reporting this same problem for over 4 years to onstar and gm that I had issues with the headlights dimming upon stopping at going. I have called onstar and was told nothing was wrong with my SUV. I have also saw a engine light flash, called onstar and nothing was showing wrong. Today, my vehicle engine light and battery light came on and I was informed by onstart that the generator/alternator needs to be replaced. Vehicle has 58k miles.
I bought my 2005 Trailblazer the same year with 19+k miles. I started having it stall on me around 30k miles. I took it to hayward, CA chevy dealership because it was still under warranty. They said that they found nothing. I took in again because the engine light came up and they said the problem was the light only but, that's the light that would flash when it stalls. I took the car back in several times for the same situation. At the time, I had 2 boys. . . . . 8yrs and 6yrs and this started too become unreliable because I was putting them at risk and not only that, I would stall and then take a few minutes to start again. I've been told that maybe it stalls because the engine was not warm but I know that it can't be it because a few times I was on long road trips and the engine would stall on and off. This has been an ongoing problem since 06 and it's a horrible risk because it's stalls while driving. My kids and I can get hit from behind. I don't know who else to repost this too. I bought another car 5/07 because this vehicle is not reliable but use it when I have to and up to this day, it still stalls.