My headlights and dash lights flicker while driving. Also while driving my lights will dim and the blower for heat & A/C will slow and then pick up to normal speed again. It also revs by itself, even in park and will go forward slightly when it does surge. These problems only started after the alternator was replaced. I think it is a safety hazard to have lights flickering and engine surges.
2005 Chevrolet Trailblazer lights complaints
Page 5 of 6: complaints 101 to 130 of 143, newest first, as owners wrote them.
The third brake light on my 2005 chevy trailblazer works yet the other two brake lights do not. The bulbs have been replaced and that is not the issue. Also, the headlights flicker to high beam at night for no reason. No one seems to know the issue.
I have an 2005 chevy trailblazer that the lights constantly are flashing. They dim and then come very bright again non-stop. This can not be safe because for several instances they are so dim that you can't see in the dark. I have had the vehicle in several times when it was under warranty and gm said it was normal when the fan kicks on. Well it is not normal or is it safe. I can not manually flick the lights as fast as they flicker when I am driving down the road. It is very unsafe and gm needs to find a fix for it.
Headlights and dashlights flicker erratically that it almost looks like you are flashing your lights at oncoming motorists. Have had it to the dealer more that six times for this without resolve. The dealer says it is normal, and they don't care if we get killed.
I own a 2005 chevy trailbazer. The dash and headlights flicker and dim while night driving no one can find the problem.
Speedometer on my trailblazer showed a wildly inaccurate speed reading. This reading was very low and could have resulted in a speeding/ safety situation. The speedometer could give a false reading allowing the driver to enter a curve or city at an unsafe speed. At a stoplight the needle pointed straight down instead of zero. I contacted gm who informed me that there are not enough complaints on this specific model to warrant a recall. As I understand it the components causing the failure in the models being recalled are the same as those in trailblazers. My vehicle also has the dimming/flickering lights at night. Gm has a technical bulletin out that says this is normal. There has to be a reason for these issues. I don't call losing lights at night normal. Nor do I have confidence that the lights will not fail completely.
Turned vehicle on and found A/C blower not working and ABS and brake light come on. Blower will come on intermittently when the bas / brake light goes out. I am concerned that if there is a short in the system there could be a fire. Chevrolet should be taking care of this concern for the owners.
I own a 2005 trailblazer lt witch I purchased new in july 2005. I too have experienced the problem of flickering headlights and dash lights. I have taken the vehicle to the selling dealer several times with the problem, the last time in may 2008. The dealer has never been able to duplicate the problem, however, the last time I was there they did produce a gm document (#2046572) that did admit there is a problem. The document states "at this time, there are no repairs for this concern. Engineering is revisiting this concern." I also consider this to be a serious safety issue.
Driving at night the head lights dim then brighten the amp gauge drops to 9 then recharges again making the lights come on brighter. Had it to the dealer and they tell me nothing is wrong with it.
Headlights dim intermittently, heat looses power at the same time, now getting flickering of interior lights. Wasn't able to fix it. Bumper warping. Getting 10 miles to the gallon! Paint on buttons wearing on radio. Sun roof leaked profusely, had it fixed. Rear window defogger doesn't work. Head liner sagged.
Tl*the contact owns a 2005 chevrolet trailblazer. While driving at any speed, the contact depressed the accelerator pedal, but the vehicle did not respond. Simultaneously, the headlights began to dim and flicker. The contact did not notice any differences in the vehicle prior to the failures. The vehicle has not been diagnosed by the dealer. The current mileage was 34,000 and failure mileage was 2,000.
Headlights are constantly flickering causing other drivers to react as if I'm an emergency vehicle.
While driving above 30mph, if take foot off accelerator, headlights will dim to almost no light as will the dash lights, on off, on off, when press on the accelerator, lights will go on normally with same brightness. Dome light button to left of steering wheel will work once every 50 tries, lights on left side of radio do not work, cd player will not take cds. I am unable to drive my vehicle at night, it has been to a certified chevrolet dealership twice now, they have stated that everything is running correctly and that they cannot find anything wrong with the vehicle. The speedometer will read 0 (no matter how fast I'm going) which is apparently a known problem with chevy vehicles, but they are not willing to fix it in the trailblazer.
Head lamp diming
While driving down the road at night, the lights seem to dim and brighten. If you look at the voltage gauge, it is fluctuating also.
Tl*the contact owns a 2005 chevrolet trailblazer. While driving approximately 65 MPH, the exterior lighting flickered and dimmed temporarily. The dealer could not duplicate the failure. The contact filed a formal complaint with the manufacturer. The failure mileage was 15,000 and current mileage was 22,000. Updated 01/24/08 *bf updated 01/24/08
Lights dim and brighten at night with corresponding drops in voltage on my wife's 2005 chevrolet trailblazer lt. Looks like I am dimming my lights, have noticed responses from other motorists. Several trailblazer owners are reporting this problem.
Headlights blink, dim and brighten have done this since new .engine light flashes intermittently has never given a code. Dash lights also dim. Has been to dealer several times. No help.
Purchased 2005 trailblazer 3/8/05 @ bacon chevrolet in palestine,tx. Problems: while driving headlight & interior dashboard lights flicker & shut off, engine loses power & surges lunging forward, battery gauge drops & pegs out, check engine light comes on, ding alarm, radio, electric locks, etc, w/ no key in ignition go off & on, no power cant start vehicle. Svc mgr/tech comments: cant duplicate complaint, no codes showing, gm bulletin stating "normal" & working as designed, can not replace or work on anymore due to tech/gm motors stating "normal", or until problem can be duplicated or until they have a way to fix. Repairs:(total of 9 times in shop) 2 headlamp switches, 1 battery, 3 times wiring harness gone through, numerous PCM updates/reprograms, fuel pressure check, ipc reprogram, data recorder installed, replaced bcm body control module, workorders have been altered & work stated done that has not been done. I have all my workorders. Conclusion: took to bbb of tyler,tx.cs#chv0592738, had arbitration hearing. Bbb's decision was that their opinion was that the lights going off while driving was not a safety issue. Thought the bbb was suppose to be a consumer advocate! I found this website while doing a college research paper. How many other consumers have same problem, but do not know about this website. Will anything be done before someone is killed or is that what it will take!
Tl*the contact owns a 2005 chevrolet trailblazer. While the vehicle is being driven or idling, the electrical system shuts down. The failure occurred at night when shutting off the headlights and the instrument panel; however, the engine does not shut off, only the electrical system. The failure has occurred on six occasions. Speed was not a factor. The dealer replaced one of the circuit panels, but the electrical system continues to fail. The contact stated that the dealer was giving them the run around after extending the electrical system warranty to 100,000 miles. She also stated that there has been electrical failure since the vehicle was purchased. The purchase date was unknown. The current mileage was 50,000 and failure mileage was 5,000. The consumer stated the problem still exists. Updated 12/04/07
My headlights flicker and the voltage meter bounces around. The flickering headlights are a danger to myself and others as those ahead of me think I am trying to flag them down.
My head lights and dash board lights dim and flicker. My fuel gauge is never correct it will show empty right after a fill-up.
Headlights and interior lights flash and flicker ramdomly while driving. Sometimes it is so bad that other drivers pull over because they think I am flashing the lights at them. Dealership has been unable to fix the problem after four visits.
The headlights on the vehcle dimme d intermitantly. It occurred at night and often when I remove the foot from the gas pedal. It may happen one night and not happen again until 3 to 4 nights from then. *ak it has been brought back to the multiple dealerships 4 times. Once, they stated it was a bad ground, next time they changed the battery and the next time they said it was normal. Then I went to another dealership and they changed out the alternator. This is a safety issue for other drivers alng with myself because of the blinking headlights. The amp meter of the dashboard fluctuates when this occurs.
In march 2007 the check engine light came on and stayed on . I took vehicle to dealer to have it checked out. It turned out to be the secondary air pump either clogged, not running or something electrical with it. Ever since then all the exterior and interior lights became bright then dimmed for a few minutes when I start the vehicle. After leaving for work and stopping the vehicle to turn, and then again a few miles down the road, the headlamps started to flicker. Sometimes it flickered a few more times before I got to work , only 25 minutes from home. I have noticed the battery gauge fluctuated while this is happened. I was told that this was normal. Also, I am not sure this was related, but ever since the check engine"light problem the air conditioning system did not work properly. It didn't work on 5, but it did blow some on the other levels, and that varied too. I have had the air conditioning recharged, to no avail, it acted like there was a leak somewhere. Hopefully ,gm or someone else will find the solution before there was an electrical fire or even a case of road rage due to other drivers thinking I wa s flashing the bright lights at them.
Exterior lights and interior lights dim out randomly while driving. The service department at gm says it is normal and nothing they can do. Chevrolet has issued a bulletin regarding this. How safe can it be to drive at night with headlights dimming out?
I purchased an 2005 trailblazer and my headlights go bright and dim and I contacted gm and they are unwilling to fix the problem and to put me into a safer car I am scared to drive this vehicle considering I have two small children I brought the vehicle into the dealership and they replaced the alternator and it happened again
2005 chevrolet trailblazer headlights dimmed while driving for no reason. Vehicle brought to dealer, they stated it was normal due to an air pump turning on and off. I felt it was very dangerous due to other driver's thinking I am flashing the headlights at them. That happened about 10 times a week while driving at night. I have found online many other owners with the same problem. At the link below http://www.topix.net/forum/autos/chevrolet-trailblazer/tucllqk4uif5na0ut. Ak
Severe fluctuations in electrical power, resulting in dimming of headlights.
The headlights will dim when driving the vehicle. This can occur when idling but mostly happens when the vehicle is at highway speed. This has happened several times and two different dealers have checked the problem and performed all applicable tsbs and replaced the bcm with no difference in the problem. The lights will dim enough that when driving on dark country roads I am not able to identify the edges of the road. Tech support claims this is normal operation of the system.
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