Problems with 2005 GMC Envoy ELECTRICAL SYSTEM

Almost dusk, high beams were on. thought i saw a flicker. got behind another car and saw that it was my lights. looked to my panel and my voltage was swinging between 9 volts up to 18-19 volts. turned all power draw off except my low beams. needle kept swinging and lights kept flashing. was 6 miles from home. i made it. there was a discharge to my system instead of continueing to charge. took to dealer. nothing found. 11-6-2012 it happened again. has happened inbetween also. very intermittant. had batttery & alternator checked at least 3 times. always good. after incidents, works fine until next time. never happened in summer. always when cooler weather. now that it is december, afraid to drive after dark. there must a bullentin or recall??? too many complaints on this problem. don't want to get rid of my car. engine is good. only 69,000 miles. is dealer just acting dumb? *tr

For the last few months my 2005 gmc envoy denali has had repeated problems with the fuel gauge. after re-fueling the vehicle, the gauge will go to empty and illuminate the empty tank warning light. the check engine light also comes on. within a few miles the fuel gauge will begin to fluctuate wildly for a period of time, making it impossible to know how much gas is in it. the fuel gauge sometimes begins to operate again after the car has been driven for a few days. car has become unsafe because it is difficult to determine how much fuel is in it and empty tank sensor "cries wolf." also, the fuel gauge has begun to register a full tank when really the gas tank is near empty. once you start driving the fuel gauge begins to fall slowly until about 10 minutes later it finally registers the proper gas level... i've thought my husband filled up the tank and almost run out of gas because the fuel gauge didn't tell me i was out of gas until i was on the highway stuck in traffic - away from a nearby gas station. the trip odometer is not an exact science so it cannot be relied upon. (mpg vary depending out temperature, city vs. highway miles, mph, etc). message boards show that this is a common problem and eventually lead to the car stalling unexpectedly, even during highway travel. see http://www.aboutautomobile.com/complaint/2005/gmc/envoy/fuel+system. " *tr

2005 gmc envoy instrument cluster panel failure... the speedometer and gas gauge quit working. *tr

Out of nowhere my front head lights went out. its not the fuse or the bulbs, both front low lights went out. the high beams work. there is no power going to the lights and i have to buy a new switch. i also had to replace the engine almost a year ago because the o rings went up. the gas gauge is broken and my passenger window will not go down. i feel so stuck with this car! *tr

My 2005 gmc envoy is experiencing a problem where the speedometer will not slow down. it does however accelerate. so now when i am parked my vehicle shows that i am doing well over 120 mph. i have to use my gps unit to check my speed, this is a huge safety concern and something needs to be done about this. i have done research on the internet and this problem is afflicting many people. seeing as i helped keep gm from going out of business shouldn't they help me? *tr

Tl*the contact owns a 2005 gmc envoy. the contact stated that the instrument panel stopped working which made it impossible to determine the speed and how much fuel was in the vehicle. the failure also caused the headlights to flicker. the vehicle was not inspected by the dealer or a local mechanic to determine the cause of failure. the failure mileage was unknown. the current mileage was 105,189.

Instrument cluster inoperative. speedometer pegged and all other instruments except the tachometer malfunction. *tr

2005-envoy orig owner> speedometer started going crazy pegged at 120 when i was doing only 65(gps says speed) then it went down to 20 still doing 65- this morning all fine. today after work same craziness. like others wondering why was this model left out of safety recall? won't be buying a gmc again that's for sure. bought car 5 years ago next month and less the 70,000. can see there is a known issue - based on all the hits you get on the internet when you google it. *tr

2005 gmc envoy speedometer malfunction. speedometer is reading 120 mph at all times. *tr

I have a 2005 gmc envoy. i have had several issues with the ignition switch, the fuel gauge sensor, and the rear hatch. i have replaced the ignition switch four times, purchased a new battery, and a new starter, as well as a fuel sensor. i still have intermittent issues with my car not starting for no apparent reason and stalling out while driving and especially when decelerating. the stalling is a severe safety hazard as i travel very busy highways during my daily commute. my wife and children, as well as myself, have been stranded many times when the vehicle would not start after operating fine prior to turning off ignition. we have had the vehicle in the shop many times and have been told there is nothing that can be done for us because they have no idea what the cause is. at this point, i do not allow my wife to drive the vehicle anymore out of fear for the safety of her and my children. this is a significant stress for us that i feel we should not have to endure. *tr

Tl*the contact owns a 2005 gmc envoy. the contact stated that the instrument panel stopped working which made it impossible to determine the speed and how much fuel was in the vehicle. the failure also caused the headlights to flicker. the vehicle was not inspected by the dealer or a local mechanic to determine the cause of failure. the failure mileage was unknown. the current mileage was 105,189.

Tl* the contact owns a 2005 gmc envoy. the contact was driving at an unknown speed when the speedometer failed. the dealer was informed of the failure and stated that the warranty did not cover the repair for the instrumental panel. any repairs would be at the contacts expense. the vehicle was not repaired. the failure mileage was 80,000 and the current mileage was 87,000.

Tl* the owns a 2005 gmc envoy. the contact stated that the instrument cluster failed and the contact was unable to determine what speed he was traveling, the amount of fuel in the fuel tank, the oil levels, battery level and vehicle temperature, all of which the gauges failed to operate. the contact took the vehicle to the dealer and the dealer stated that the entire instrument cluster would need to be replaced. the contact noticed numerous complaints online regarding the instrument cluster and believed the manufacturer should issue a recall. the failure mileage was 90,000.

2005 envoy faulty instrument cluster contacted gm customer service and was informed that there is nothing they can do at this time for this year model. not covered by bulletin: gm speedometer "special coverage adjustment" 07187a 07187b. just purchased this vehicle used and because the dealership i purchased it from does not believe that it is a safety issue they will not cover it. *tr

The speedometer stops working periodically. sometimes it doesn't work at all and then days like today, it goes all the way up to 120 mph when i am only going 50-55 mph! *tr

I was on my way to work during the winter months and my blower fan stopped working. at first i couldn't see very good out my window and my headlamps started dimming. there is an overload someone near the blower and my vehicle only has 70,000 miles on it. i think this should be a recall because you need heat and light to see when you drive and without it can cause accidents. i was down in a ditch when mine went out and thank god someone was watching over me. the price you pay for a nice vehicle their should be no defects with under a 100,000 miles. i have still from this day haven't had the money to replace it because my truck payments and insurance break my budget. *tr

Speedometer failed. it now either displays no speed or an inaccurate reading. *tr

Speedometer jumps from 120 to wherever. can never tell how fast or slow i'm going. never displays correct speed. oil pressure gage goes up and down. also, headlights keep going out. had to take to mechanic to redo wiring for both headlights. *tr

I own a 2005 gmc envoy and the speedometer stopped working about 3 weeks ago. i took it to the dealership for repair and was advised that they did not know what the issue was but since they had removed the battery and re-connected it that the speedometer should work correctly. i worked correctly for 2 days. *tr

The speedometer constantly shows different speeds. will be driving down expressway at 65mph and next thing you know it shows 90mph so you slow down 65 again and realize that everyone flies by. the best i can figure is it will suddenly show a different speed than one is actually going from 20mph less to 40mph more. different every time. *tr

Instrument panel fuel level indicator shows incorrectly. at first it would show half tank or more when in fact there was less gas. now the fuel level indicator shows empty at all times. the audible fuel warning for low fuel also rings constantly. after running out of gas in the middle of nowhere on several occasions the vehicle was taken in to the local dealership. the repair was too costly. we were however charged a $100 fee just for the gmc dealer to look at it. we now track fuel using the trip computer. look online for some help i was amazed to find out that many, many, many people have and are having the same issue. *tr

The wipers were the first to go. that needed a control module. the touch pads for the tail gate were next. first the drop down then the swing. then the right side passenger door inside handle stopped working. then the left side rear door outside handle doesn't work. then the four wheel drive doesn't work. then the fuel gauge doesn't work. now the passenger's window doesn't open. 5th speed on the heater stopped working. what is the matter with gmc? that is a high end vehicle and as such should not be plagued with such problems. *kb

The gas gauge stopped working and shows that the vehicle is on empty. the "low fuel' indicator on the dash will blink randomly and "ding" to draw my attention to it. the gas cap was replaced a week later but the problem has not been resolved. it continues to read "empty." since then the speedometer has also stopped working. the speedometer hand has completely dropped below the 120 mph mark, although for a few weeks it would register that i was driving much faster than the speed of traffic around me. moreover, it would register 30 mph when the vehicle was completely stopped. yet, it has since stopped working altogether. the vehicle has also recently stalled in reverse and several times has surged/accelerated quickly when i am driving slowly and push the gas pedal to accelerate. i have an appointment with the local gmc dealership and have called the national gmc dealer to document my complaint(s). *tr

2005 gmc speedometer failure. stops working and gets stuck on the 120miles point even when the car is off and not just driving. occurs after about a few minutes of driving and, after online and offline research, it turns out a lot of people have these problem with some gmc trucks, especially the gmc envoys models. and gm is not doing anything or refusing to fix it since it is a manufacturers default. there hasn't been any recalls to address this issue and there are even lawsuits in some states about this. my truck is not even old only 52,000 miles and i don't drive a lot just to work and home. *tr

There was ignition switch failure while driving the vehicle. the power steering and brakes gave out, the engine shut off, and all the lights on the dash came on. it resembled the car running out of gas without doing so. after i pulled off the road with great difficulties, i put the car in park and the vehicle got stuck in it. the engine would not turn over after this occurred and needed to be towed. there is no release switch which the tow truck driver said there should be so he could get it onto the truck, so the vehicle has to be drug with the wheels locked onto the flatbed and then pushed off in the same manner. we paid to have it fixed and it has now happened again 5 months later. there are many reports of this online and it is not just with the gmc envoy denali it also includes the chevy trailblazer and possibly other vehicles manufactured by gm. there was one person online that said they keep spare ignition switches in the vehicle and the tools to swap it out because of how frequently it happens. the dealership replaced the part and it is not available as far as i know, because it was not returned to me. the vehicle was a 2005 gmc envoy denali. *tr

2005 gmc envoy instrument cluster defective speedometer malfunctioning. *tr

2005 gmc envoy gas gauge does not work. car had 42000 miles when it quit. car now has 50200 miles on it. gas gauge reads empty and sometimes will float just above empty even with a full tank of gas. car has left family along side road while waiting for help. should be a recall as there is thousands of complaints on this issue. *tr updated 02/01/10 *bf updated 02/02/10.*jb

2005 gmc envoy has erratic speedometer. not safe to drive when speedometer keeps getting stuck. *tr

Windshield wipers will not stop wiping when control is moved to stop. must stop vehicle, turn ignition off in order to turn the wipers off. *tr

Gas gauge and speedometer no longer work. never know how much gas is in the car. *kb

Tl*the contact owns a 2005 gmc envoy. while driving approximately 10 mph, the contact noticed the fuel gauge indicated the fuel tank was empty. the contact stated she had fueled the vehicle moments before. the contact stated the speedometer stopped functioning. while parked, the speedometer displayed a reading of 135 mph. the vehicle was taken to the dealer where the technicians stated the instrument cluster needed to be replaced. the vehicle was repaired. the technicians stated the fuel gauge sending unit needed to be replaced in order for the fuel gauge to read properly. the fuel gauge was not repaired. the approximate failure mileage was 80,000. updated 03/15/11 *bf updated 05/23/11

The speedometer on my 2005 gmc envoy xl started acting erratically and at any time can show that i'm doing 70 when i am stopped, be pegged, or sometimes it works. i have to use my gps to determine my speed. i took it to a gm dealer to see if there was a recall regarding this issue because i had heard that there was for vehicles up to 7 years old or up to 70,000 miles. the dealer told me there were no recalls for the vehicle and that it would cost $400 to replace the entire gauge cluster. *tr

I have a 2005 gmc envoy that has just started having issues with the fuel gauge. i have filled the gas tank and the gauge reads empty with the fuel light on. then 10 minutes later the light goes out and it reads that i do have fuel. then a little later it starts going down and reads empty again. i have re-stopped to get gas to find that the tank is full. this is wrong and there should be a recall on this item. it draws the driver's attention away from driving and must have caused accidents somewhere in the usa. *tr

I have had my 05 gmc envoy for several months now and have taken it to be repaired at least once a month! my issue is with the electrical system and the headlights and console "flashing" at night. i have taken it to the dealership twice and the first time they checked the battery, some cables and gave it back to me saying they could not find anything. the second time i took it back about a month later because the light were still flashing. the dealership had it for 2 days and told me it was my alternator. i did not believe them and did not get my alternator changed ($675.00) and my car has been starting and running fine. my headlights still flicker, but there is nothing i can do about it. i have read several other complaints about this and most of them go through a new battery and alternator and it still does not fix the problem. this is something gmc needs to look into and fix because it is a huge safety hazard. *tr

The check engine light kept coming on and i took it to the dealer for repair and was told "it's ok. forget it." on 01-09-2009 while traveling on texas highway 60, i had the cruise control set for 70 mph. traffic was normal but continually passed me as if i was going slower. i pulled over at a convenience store and parked the vehicle. the speedometer registered 45 mph in park. i continued home gauging speed by the other traffic. the vehicle was parked. on 01-14-2009, my wife and daughter were in the vehicle returning from school. the speedometer appeared to be working. at approximately 3:00 pm while driving home, the electric door locks began to lock and unlock themselves. at the same time, the a/c went to maximum heat and high blower. my wife stopped the vehicle and put it in park. the side curtain air bags deployed, striking my daughter in the left temple resulting in a mild concussion. onstar notified the police of a collision. i contacted the dealer who referred me to gmc customer assistance. the agent told me that this kind of thing happens when traveling too fast and turning too sharp. an investigator was dispatched to gather computer information and determine if there had been a collision. his results were there was no collision and the bags deployed per command from the vehicle control system based on the vehicle traveling 20 mph and turning too sharp. the vehicle was actually traveling 20 mph on a residential street in a straight line. turning right would have resulted in going through a fence and left would have put the vehicle in a park. gmc refused to investigate the discrepancies between the computer and the driver's account further. i contacted a local gm dealer who has as much concern about this incident as i do. no repairs have been initiated to date as it is unclear what is at fault. several gm technicians and service managers believe there is a problem with the vehicle control system but are unable to proceed without approval. *tr

Tl*the contact owns a 2005 gmc envoy. he stated that the headlights, dashboard lights and rear lights shut off while driving approximately 35 mph or various speeds. the high beams immediately activate when the headlights shut off which distracts drivers. the failure mileage was 28000 and the current mileage was 58000.

One day my oil gauge stopped working. a few months later the speedometer stopped working and eventually every gauge in my panel stopped working. this all started around nov of 2008. i could not figure out what was going on. i checked all fuses, bulbs and wiring. now two days ago my head lights stopped working on low beam. nothing was found to be the problem. i recently found hundreds of envoy owners with the exact same issues and now know it is the instrument cluster panel. est cost for the part only $570. *tr

Purchased a used (had previously been gmc exec's) 2005 gmc envoy in september 2005. since january 2007 we have experienced multiple issues with the vehicle. we have had problems such as the headlights dimming on and off while we're driving, the airbag sensor saying off even when my wife is sitting in the passenger seat, and the driver side power seat would move up, but wouldn't move forward or backward. however, the biggest problem and safety issue has been the vehicle shutting off while in the middle of driving it. there have been numerous occasions where we have been on back roads, rush-hour freeway traffic, etc. and the vehicle shut off, lost all power including power steering and you can't pump the brakes-you have one shot to hit the brakes. last thursday, march 6, 2008 this happened to us 5 times in one day!! my wife was on her way home from a job interview and the vehicle shut off on her 3 times. then, it shut off on her again when she was driving to pick me up from work. on our way home it shut off for the 5th time that day and it did it in the middle of heavy, rush-hour traffic on the railroad tracks! this is an issue that needs to be fixed. we keep this car in tip-top shape, properly maintained. it is barely 3 years old and having these types of problems is not right. gm needs to issue a recall on this asap. this needs fixed immediately...and apparently this is happening with a lot of, if not all, envoys. one envoy...that could be a fluke, but more than one, even just 2 is a duplicate problem and should be recalled. *tr

I'm back! yes here we go again a repetitive issue w/gmc here it's july 20012 and yet no reply from gmc or dealership on my continual problems with all gauges located on instrument cluster. sure reimbursed partially for charges replacing fuel sensor but notified to contact dealer where repair was completed but no return calls from gmc and the so what dealership which they call their establishment. this was only one of many problems. gauges fluctuate speedometer, rpm, fuel, battery, water temp just say all the [xxx] gauges suck. how does gmc guarantee today try are vehicles today if not satisfied bring them back bs why not take all these gmc envoys from 2003-2008 back or better yet resolve our issues. strongly i feel let's all unite & file a major law suit against gmc for hardship, false information, defective product sold, stress, anger maybe they will address our issues asap. disabled vietnam vet who depends on envoy for medical appointments. today rarely drive my envoy due to my personal fear running out of fuel or being in an accident. please department of transportation & highway safety or safercar.gov address our issues with extreme urgency, would be appreciated, check my previous issues reported. yeah, was planning purchasing new gmc truck in 2013 gmc blew this from occurring totally,thank you for your valuable time. *tr information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr

I have gmc envoy 2005. the speedometer is not working. basically sometimes it gets stuck past 120, sometimes at 0 or in between. i could be driving 30 mph and the speedometer will be showing 110 mph. this is a known defect on gmc 2005 envoy, but the company is only taking a responsibility on models 2002-2004. i have called around dealer shop and they said gmc is only willing to fix if the car is between 2002 and 2005, eventhough this is a known problem. almost about everyone i talked to, who owns gmc envoy 2005 indicated to have this problem. i really think gmc should own to its defect and take care of this issue. *tr

Speedometer stopped working correctly. *tr

The instrument lights regularly blink in and out on my 2005 envoy. there have even been times when the headlights blink off and on for no known reason. has happened a few times over the last 3 or 4 years. scary stuff! plus, i have read on several forums that this is a common problem with these vehicles. one fellow said he took it into the shop and they could not find the problem. recall - and now the problems with the gas gauge and check engine light. my husband was laid off from his job and we can't even afford the 1/2 that gm is offering to fix the thing in their recall. if they knew it was a failure of their equipment why are they not paying the entire amount? *tr

Gas gauge has not worked since 2007. headlights and some dash lights as well as ext temp gauge sometimes flicker. no positive response from dealer for gas gauge. was initially told headlights were supposed to do this, a "feature". i asked them to document this for me, they said they would look at it. replace body control module, no change. said it could be this or that, but out of warranty at my expense. i told them i would pay for it, but if it did not fix the problem i would not. they refused to work further on it. *tr

I have a 2005 gmc envoy. the envoy began experiencing problems at approximately 58, 000 miles when the gas tank began reading empty no matter how much gas was in the tank. eventually, after much complaining to my local dealership they stated they would only repair the problem if i paid for half of the repairs. i refused. later, at approximately 80,000 miles, my speedometer began malfunctioning. the speedometer works intermittently, just recently it was stuck at 120 mph even in park. now, the battery gauge has begun to malfunction. the battery charge ranges from the lowest to the highest with no real rhyme or reason. it is apparent by reading on the internet forums that this is a major product defect as it happens to many, many gmc owners, especially 2002-2005 envoy owners. i have filed complaints with gmc directly and received responses that are not satisfactory. these items should be a recall effort and repaired by gmc as they are clearly product default not just general ware and tear of the vehicle. these problems are costly and present safety issues while driving. *tr

Problem just started with no warning. speedometer reads 60 mph while vehicle is parked with engine off. when you crank the vehicle. speedometer indicator drops down approx. 5 mph (55 mph) then when you drive the vehicle the speedometer indicator (needle) goes past the 120 reading on the speedometer. i feel this is very dangerous because you cannot determine the true speed vehicle is really going . vehicle odometer and trip odometer are not affected (checked by mile marker on interstate). failure is consistence . occurs everytime vehicle is operated. notified dealership and they said (no recall) . vehicle has approx 52,000 miles. *tr

Reported earlier gas odometer broke when fueling vehicle on 2 seperate occassions, first time fixed, then again while fueling gas, it broke. failed to mention my problems with the speedodometer. it was fluctuating all the way up, then all the way down irratically before it dropped down to the middle. *jb

Since i purchased my vehicle in august of 2005, i have experienced dashboard lights and headlights dimming at intermittent times. i reported this to the dealer ,where i purchased my vehicle at various times. each time it was serviced, i am told that they were unable to locate any problems with the vehicle.*ak

The headlights & dash lights flicker & go out while driving at night time , no weather being a factor & no other things either. other people exp. the same prob !!!! the voltage meter is dropping during this period also .have had back to dealer they tightened the battery cables & also put pads behind the cables this was not a fix !!!!!!! what can be done to fix this major problem safety!!!!! this happens almost every time you drive and the lights are on!!!!!! *tr

Tl* the contact owns a 2005 gmc envoy. the contact stated that the speedometer and the fuel gage sensor failed intermittently. the sensors were replaced twice. the vehicle was taken to the dealer and the manufacturer was contacted, but the vehicle was not further repaired. the failure mileage was 62,000 and the current mileage was 131,000.

There have been numerous occasions when the lights on the vehicle flicker and dim. this has been noted to occur most frequently when driving in high humidity conditions. the voltage gage jumps approximately 6 volts. the vehicle has been to the dealership for this issue, but i was told that the problem could not be recreated. *jb