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Problems with 2005 Chevrolet TrailBlazer ELECTRICAL SYSTEM

On average, the 2005 Chevrolet TrailBlazer starts to “feel” problems with the ELECTRICAL SYSTEM and its various aspects after 74 348 miles.

Components Affected by ELECTRICAL SYSTEM Issues

We have classified the 427 complaints from 2005 Chevrolet TrailBlazer about ELECTRICAL SYSTEM into the following categories.

INSTRUMENT CLUSTER/PANEL 171 ALTERNATOR/GENERATOR/REGULATOR 9 WIRING 1 IGNITION 1 HORN 1

Recently reported ELECTRICAL SYSTEM problems on 2005 Chevrolet TrailBlazer

First my gas gauge started to malfunction. after purchasing gas my gauge would work sometime. now it doesn't work at all. then my oil pressure gauge went. now my speedometer works most times but after driving a distance it does not register correctly. after shutting off and starting the car a few times it starts to work again. i've been told it is a common problem with chevys. my brother had the same problem in his chevy truck. *tr

Speedometer just stop working. leaving from work and speedometer wasn't working, period. *tr

The fuel gauge reads empty when there is plenty of gas in the tank. it sometimes read full when there is little gas left. *tr

First my speed gauge started going crazy reading different everytime i crank the vehicle then the alternator gauge started reading off the chart my highest number on the gauge is 19 it is reading at the 210 on the temp gauge that is how far past the 19 it is today however it may be different later i love chevy my family are all chevy people and it is sad that chevy has forgotten about there customers i am in law school not long left when i am finished i am filing a suit for all the people who own this vehicle chevy needs to step up an take responsibility it is not a fluke that this many people are having the same problems and it is ridiculous that chevy has dropped so low that they expect us to just eat these problem well quite frankly i am full up of the bs i am also writing my local paper and news station and i will bug them until they run an article and air these problems an some other problems these vehicles are having chevy won't fix our problems they won't listen to the ones whom keep them in business well maybe they will listen to a judge step up chevy it is crazy that you won't take responsibility for malfunctioning parts you will see your day in court. *tr ## vin failed ##

My gas gauge has stayed on empty for a month or so with the gas light on. i have not had the money to fix it and i put gas in it the night before the incident happened. i was driving home from a family members house a few blocks away from my house and my 2005 trailblazer died and everything locked up on me. the brakes would not work what so ever. and i just had brand new brakes put on a couple months ago and my steering wheel locked up. my vehicle would not stop. it kept going. i am so happy that i didn't have my three small children with me. it took me three turns onto three different streets before it finally stopped. it was very hard to turn. and my back wheels were making a horrible noise and smelled really bad when i got out. i always keep a gas can in the back in case i ever run out of gas due to the gauge not working. and mind you i have only had this vehicle a year. gm should have to pay to get this fixed. this is very dangerous. thankfully someone was watching over me and there was no other cars headed toward me. it was on a main roads that has a 45 mile an hour speed limit. i will never buy a chevy again. *tr

Ran out of fuel once on highway, when gauge showed tank was full. in jan/feb the gas gauge just stopped working even when completely full of fuel it will show only 1/4 of a tank or none at all. the radio works only intermittently will work then stop working unexpectedly. headlights are always burning their connection, short circuiting my headlights pretty frequently. *tr

Tachometer and speedometer began acting erratically. speedometer now acting properly but tach has never functioned correctly since. researching online i have discovered that there are literally thousands of these instrument cluster units that are failing and eventually additional instruments within the cluster are likely to break. in fact, a class action suit forced general motors to recall/replace the instrument clusters on silverado pickups for similar problems. when i contacted gm about working with me to replace the failing cluster and they told me there were no recalls and to basically "pound sand." with so many documented instances of failure and gm's now documented history of avoid recalls even at the cost of human life i believe it is time for the nhtsa to step up and bring pressure on gm to resolve this issue affecting thousands of owners who have been rebuffed in their efforts to have the automaker accept its proper responsibility for using inadequate or faulty materials. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that the steering wheel became difficult to turn and the speedometer failed. in addition, the rear hatch lock failed causing the contact to be unable to unlock the rear hatch and the front rotors failed. the vehicle was taken to an independent mechanic, who replaced the power steering pump and the front rotors. the speedometer and rear hatch were not repaired. the contact also stated that there was a strong abnormal odor present inside the vehicle and the engine warning light illuminated. the manufacturer was not notified of the failure. the failure mileage was 58,584.

Speedometer failure. speed presented by gauge was incredibly inaccurate. rate of speed was 20-30 mph faster. finally a total "lock-up" of instrument. at a stand still gauge reported 60mph. this has been reported to gm they refuse to recall these vehicles. refused to repair. further research showed thousands of reports of failures of speedometers. how many people have died and or crashed because rate of speed was inaccurate?? *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that whenever it rained the windows and door locks stopped working. the contact also stated that the water entered the door and caused a short circuit. the contact also mentioned that once it dried out the windows and door locks began to function normally. the vehicle was not inspected. the failure mileage was 89,000. the current mileage was 107,000. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that the vehicle was parked when she noticed that the driver's side window was opened mid-way independently. upon further inspection, she found that the components were melted. the vehicle was taken to a dealer for diagnosis and she was informed that both a fuse and the master switch would need to be replaced. the manufacturer was not notified of the failure. the vin was unavailable. the failure and current mileage was 108,000.

I was traveling at approximately 55mph and the speedometer was indicating 120+mph. the speedometer has been sticking and indicating incorrect speed for about a month. normally when the engine is cold and the outside temperature is cold. when driving and the vehicle warms up, the speedometer eventually corrects itself after stopping at a light and shutting the engine off and back on. *tr

Speedometer/instrument cluster have failed/stopped working. the gauge began ticking while being operated; showing increased, but not accurate speed. now the gauge stays at 180 mph and no longer functions. *tr

Speedometer show 120 mphs when driving 40 mphs. *tr

Even if this car is well maintained it sadly as serious electrical issues that chevy does not want to come to terms with. the speedometer goes out and in and reads incorrectly as well as the rest of the gauges at random points in time. the heating system needs replaces and the alternator consistently needs to be replaced even when the maintenance of the car is maintained. it is a consistent struggle to keep the car running even if it is not on high miles and it is a sad product for chevy. *tr

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. *tr

Engine cylinder needed to be replaced less than 3 years of taking ownership of the vehicle in 2005 ($3,000 in repair...according to dealer it was a known issue but not a recall). gas gauge and speedometer both stopped working about two years ago. despite known issues, gm still wanted us to pay half the cost of repair. the speedometer was repaired, gas gauge is still not working. also, the heater has been replaced and we change headlights at least twice a year because of some short in the vehicle's electrical. *tr

My speedometer tells the speed plus or minus 40mph. my oil pressure gauge is stuck at around 210psi. today, i noticed that my fuel tank now reads 150% full, and the voltage is down to 9v. this is all due to a defective instrument cluster that gm had a class action suit filed on several other makes of vehicles, but denied the trailblazer, due to lack of complaints. consider this a complaint. undoubtedly, gm is hoping the mileage runs over 70,000 so i will have to pay at least part of their defective workmanship. consider how many trailblazers are zipping down the road, unaware of this defect... perhaps going only 10-20 mph over the limit. lack of complaints to the nhtsa is a poor excuse to not recall, fix and/or verify the vehicle in question is not an issue. i am currently using a gps smartphone as a speedometer, but as you can imagine, it is less accurate than ideal. a young friend housesitting my dog drove my car once, on a bad snow day, and got a speeding ticket, as he was unaware that the problem existed. i suggest gm be made to fix it. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that while driving at various speeds, all the gauges on the instrument cluster failed. the failure occurred constantly. the vehicle was not diagnosed or repaired. the manufacturer was not notified of the failure. the failure mileage was 75,000.

The heater levels started to go out. first 5, then 1 until it no longer worked at all. i got it repaired but the 5th level does not work any more. the left half of the radio/cd player no longer lights up. my gas gauge would only register a quarter tank and then would eventually dropped to empty. it no longer works at all. most recently my speedometer will occasionally quit working or register the wrong speed. i have to shut the car off and restart until it works again. also, my tachometer goes way up when i begin driving and the car seems to rev way up before it changes gears and jerks into gear. i questioned a mechanic about this, thinking it was the transmission, which it isn't. there doesn't seem to be enough power. i have constantly had issues with this trailblazer every since i purchased it. i also owned a blazer at one time and also had a lot of trouble with it. i should have known better to purchase another chevy, but never again! *tr

I have a 2005 tb ls, and it's a pos. as soon as i drove off the lot i've had nothing but issues. my brakes pulsate, go to the floor, get stiff as a board, basically they don't work. i have to pump the brakes quickly in an effort to avoid a crash. i filled the gas tank to full, huge mistake. the moment i did that the check engine light has flashed and sporadic idling. it has a loud whine under the hood, front turn signals and hazard flasher randomly stopped working. car will die if i run the a/c for more then 15 mins. it will pull to either side when i apply my brakes. i have always kept up with proper maintenance, tune up, etc. this is absolutely terrible, that so many have the same [xxx] issues and yet chevy will not recognize/take responsibility for their obvious flaws and lack of mechanical knowledge..i just want out of this [xxx] lease and a replacement car!!! parts of this document have been redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

My vehicle shows gauge light as empty even after filling up. my vehicle stopped in middle off road on early morning traffic. now we have to estimate mileage to make sure we are not left without gas, very frustrating and unsafe but can't afford to fix. *tr

My 2005 trail blazer instrument cluster is going out it started with the oil gauge and now its the gas gauge, i was also told by the dealership that eventually my speedometer would stop working, it is extremely dangerous because i am not aware of how much gas is in the vehicle or if the oil pressure is having an issue. this repair at the dealership is costly. *tr

Tl* the contact owns a 2005 chevrolet trail blazer. the contact stated that the gauges on the instrument panel failed. the contact also stated that the head lights sporadically failed. the vehicle was not taken to the dealer. the vin was not available. the failure mileage was 90,000 and the current mileage was 100,000. *tr

Cluster went out and we had to have it replaced. *tr

Gas gauge was reading inaccurately resulting in car stall. also, speedometer is not functioning correctly - will start out anywhere from 5 mph to 45 mpg over from standstill. *tr

Filled up truck and gas gauge still said it was empty. gas gauge is faulty and no longer works. have to keep track of mileage now so i don't run out of gas. i also read that gm is willing to cover half the cost and were suppose to send a letter stating that. never received anything. not at all impressed with gm and will find it hard to stay a loyal customer. *tr

Door locks repeatedly locked and unlocked, then cascading failures, anti-lock light, engine light, other warning lights. engine started to run rough and would not make power, engine quit. note transmission gear indicator read incorrectly. disconnected battery, and reconnected, engine started got me home. three occurrences that the engine just quits. it will restart after a few minutes. mechanic could not find anything wrong. had another occurrence, mechanic found a code indicating the ecm may be bad. he tells me this should have noting to do with the door locks. the door locks latch and unlatch, uncommanded. engine stops when under power. mechanic has no course of action at this time. *tr

Leaving parking lot (& wanting to turn onto road) i applied my 2005 trailblazer ext brakes. my foot & pedal went to floor with no brake at all. thankfully no cars & going slow enough or i would have hit them. instead of stopping at end of parking lot, i found myself entering road & seeing trees on other side of road coming up quickly. i grabbed the emergency brake lever. scared me to death!!! vehicle then taken to repair shop. shop owner report = hole rubbed in brake line close to driver firewall separating engine from seat area. he further said "been in business for 30+ years and had never seen this before. seems like a huge design flaw." rubbing on another line & pinhole there now - which would explain why my a/c was not working on driver side, but working on the pass side. how many other people had an accident? have another (?)... if gm has known about a problem for yrs on several models: very well documented on internet by hundreds (if not thousands of owners) - why won't nhtsa make gm do something? problem = speed gauge, oil pressure gauge, & radio all of a sudden stop working one day. then some days they all work, some days only 1 work, some days 2 work??? an equipment malfunction or computer glitch? happened about 75k miles on both my auto & my dad's 2005 chevy pickup. i live in se, he lives in ne. two areas of us; yet each dealership wanted about $600.00 to fix it. called gm: no help available!! searched internet for repair fix, & noticed tons of unhappy owners w/ same problem: gm would not help them pay for this problem - even though it's their equipment problem. clearly it is a safety issue: no one can tell how fast actually going & led to many accidents & speeding tickets i'm sure! time nhtsa steps in don't you think? then have the brake/ac line rubbing issue - clearly a safety issue & i hope you do something! i still have the brake line. *tr

I was driving during summer time and my fuel gage went from full to empty for no reason. i had just filled up, so i knew there was gas in the tank. it has since given me random readings. if i let the gas level fall below 3/4 of a tank. it will go to empty even if i filled the tank. it does work randomly sometimes. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. while driving approximately 25 mph, the brakes failed. the failure occurred intermittently for three years. the dealer was unable to duplicate the failure. the manufacturer was notified. the approximate failure mileage was 62,000. the window regulator, battery cable, tank level sensor, clutch fan, serpentine belt, tight outer tie rod, hood latch,water pump, were all replaced. also, the rotors were warped, due to rust by climate, the rear brakes pads were worn and had to be replaced. the front rotors were machined. there was an intermittent surge after accelerating from a stop. there was a squealing noise coming from the brakes. the passenger side brake lights were blowing out. the tail light circuit board was replaced. the check engine light illuminated, due to a faulty emission vent valve and hose assembly. the abs was engaging, when coming to a stop. updated 10/01/14

My speedometer quit working one day, and hasn't worked since. while driving it will say i'm going the speed limit and all of a sudden its drops to 0 mph, or say i'm driving 30 mph. my speedometer is never accurate. i went had it checked with the chevrolet dealer ship and they stated i need a new speed instrument cluster and it would cost me $518.00 just for the part, not including the labor. *tr

The vehicle presented with error on reading the speed one is traveling at. fuel gauge not working properly and not reading gas correctly. *tr

The fuel gauge stopped working then all the other gauges of the instrument panel began intermittently then permanently stopped working. aside from the battery gauge, the least important of them all. *tr

Since i got the vehicle approx 5 years ago i began having issues about a year later. it started with my speed odometer gauge stopped working then over that following year eventually all the gauges stopped functioning. little did i know that this was the beginning of my issues with the vehicle. my break lights will work off and on, my driver side windows works off and on, my blower stops working when ever it feels, a diagnostic test showed my throttle on has pedal never closes so i average 9 miles per gallon in gas mileage, the interior lights decide when to work and not, and the locks on their on causing me to get locked out of my car at times. this to me is clearly a electrical issue and have spoke to gm because i can't even trade the vehicle in to get a safer vehicle because no one wants it. either way i worry of the safety for anyone in this vehicles and they need to be taken off the streets. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated while trying to turn the vehicle off the key became seized in the ignition. the contact mentioned that it took several attempts to remove the key from the ignition. the vehicle was taken to an independent mechanic. the vehicle was not repaired. the manufacturer was not made aware of the failure. the failure mileage was 78,000 and the current mileage was 84,000. the vin was not available.

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that while driving 55 mph, the odometer and fuel level gauge failed. the vehicle was taken to the dealer for diagnosis where it was stated that the clusters needed to be replaced. the vehicle was not repaired and the manufacturer was not notified. the approximate failure mileage was 110,000. *tr

I have the same issue as the 2006, 2007 trailblazer recall of august 2012. the door module shorted out. *tr

My speedometer started to go crazy jumping around while on the highway it started off reading fine then all of the sudden it read that i was going 120mph by the time i got home it did not work at all had to guess my speed then about a two weeks later it started to work again same day it went haywire again and now it does not work at all. also i have been having problems with battery draining i have been to several places to get it check out all that can be found out is that something is staying on while the car is in the off position. there are times when i have to jump my car several times in a day and there are times when i can go days, weeks without the problem just never know when it is going to happen. *tr

Both the speedometer and gas gauge quit working. in doing research, this appears to be a problem with alot of other owners of this vehicle; this should be a recall. this could be a very dangerous combination with the speedometer not working and if fuel runs out on a busy highway for example. i was just quoted over $880 to fix and declined due to the cost. *tr

While driving to work my cruise control shut down and my speedometer stopped working. a couple weeks later the speedometer began working and now it has stopped again and stuck on 55 and doesn't move regardless if the vehicle is on or off. the cruise control won't work. i am very frightened to continue driving without knowing what speed i am driving. i can't afford to keep spending money on this vehicle to repair all the problems it's had. wondering if the speedometer is covered under my 100,000 mile warranty. please help. *tr

The car states i am going 50 mph less than my actual speed. this is a safety concern for me. if it wasn't for my gps i wouldn't know my actual speed. i have read several others complain about the same problem online. please recall this. *tr

Fuel gauge reads empty after filling tank, won't reset itself after fueling. back hatch lock is stuck in lock and has already been replaced once. sometime when your setting still at a red light or just going slow in traffic, there seems to be a "surge" of power or fuel to where the vehicle lurches forward. when driving at night the lights will flicker or dim on there own. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that the speedometer failed and would display that the vehicle was traveling much faster than the actual speed driven. the contact state that while in a parking lot, the speedometer erroneously displayed that the contact was traveling 30 mph when the accelerator was not being depressed. the failure would recur intermittently. the instrument panel lights would become extremely dim when the failure would occur. the vehicle had not been inspected. the failure mileage was 55,000 and the current mileage was 125,000.

Cluster instrument panel failed. rpm odometer doesn't work, speed ranges from 80-off the charts, gas gauge not accurate. apparently big problem w/over 300 complaints yet no recall. firestone just quoted me $700 for a remove and replace instrument cluster gauge. $600 for the gauge itself. i can't afford that. *tr

My speedometer displays an extremely inaccurate reading, or doesn't work at all. *tr

Tl* the contact owns a 2005 chevrolet trailblazer. the contact stated that the instrument panel malfunctioned. the contact also stated that the speedometer, battery and temperature gauges were providing erroneous readings. the vehicle was not taken to dealer. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 52,000 and the current mileage was 63,000. the vin was not available.

Tl* the contact owns a 2005 chevrolet trail blazer. the contact was driving 65 mph when she noticed that the speedometer was providing an inaccurate reading of 100 mph. the vehicle was not taken to the dealer. the manufacturer was contacted but provided no assistance. the failure mileage was 75,000 and the current mileage was 82,000. the vin was not available.

Speedometer not working gets stuck. *tr

The speedometer in my vehicle suddenly shows over 120 mph no matter what speed i am traveling. i have found this to be a common complaint. the fuel gauge is also very inaccurate never showing more than 1/4 tank of fuel regardless of how much i put in. *kb

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