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Chevrolet Tahoe Electrical Problems



  • gmcustsvcgmcustsvc Posts: 4,001
    Hello Waxstars19,
    I am from GM Customer Service. I apologize that you are experiencing concerns on your vehicle. Can you please email me more information about your situation so I can look into it further? You can get my email by clicking on my name. Thank you,
    Mariah GM Customer Service
  • I also have a 97 tahoe that has electrical problems. My fuel pump relay sometimes doesn't make contact because the contacts in the relay block are bent from someone sticking a volt meter probe in them when my fuel pump went out. Check the bottom of the relay out for melted plastic to see if it's been arcing out. I put a 1/4 thick scotch bright pad between the top of the relay and the cover to help it make a better connection.
    Hope this helps if you haven't figured it out yet.
  • boeing737boeing737 Posts: 1
    I have a 2004 Chevy Tahoe Z71 that has 106,000 miles on it and it runs great. For about a week the volts reading on the instrument cluster has been erratic, and now doesn't seem to be working at all. It started out fluctuating between 9-14 volts and then it went to 19. So I stopped at a local parts store and had them check the battery and it checked okay. Yesterday when I drove to work the gauges was pointed full right deflection down to the picture of the battery on the gauge, and it hasn't moved. So, what could it be?


  • kiawahkiawah Posts: 3,666
    FIrst thing to do, is to verify that the gauge is correctly reading the voltage on the battery. Buy yourself a voltmeter, can be as cheap as a couple bucks to maybe 10 or 15. Tool supply stores, auto parts chains, Radio Shack, many places sell them. Measure the voltage on the battery posts, as well as the voltage on the wire terminals, and compare to what the internal dashboard gauge says.

    I would first suspect a bad battery or corrosion on the battery terminal connection, or a bad/loose ground. But you could have a failing voltage gauge.
  • sunsetonesunsetone Posts: 2
    Are you aware of a cluster problem with 04 Tahoe's?

    I own a 04 Tahoe and the gauges became erratic. Over time all my gauges were effected and I had to have the cluster replaced. That is when I learned of the wide spread problem.
    I had it replaced about a year ago, and at that time, there was a "discount" for the cluster depending on the miles on the vehicle.

    This page may offer more information.

    Nationwide Speedometer and Instrument Cluster Repair
    Mar 29, 2010 ... GM Speedometer Recall 07187a service on 2003, 2004, 2005 and 2006 ... chevy S-10, corvettes, Suburban, Escalade, Bravada, Tahoe, Avalanche, ... - Cached - Similar
  • mpi_mikempi_mike Posts: 3
    Hello All,
    I have a 2005 Tahoe LT with the power heated seats. Well they just started coming on all by themselves. Its only the divers side and it comes on full blast and then cycles down to off and back on again.
    It seems that the computer or relay thinks the switch is being activated- the switch on the door panel does not appear to be stuck in or anything.... Any/all help is much appreciated!!!

  • gmcustsvcgmcustsvc Posts: 4,001
    Hello Mpi_mike,
    I apologize that you are experiencing a concern with your vehilce. Have you had anyone look at the vehilce to diganose the concern? Thank you,
    Mariah GM Customer Service
  • jringeljringel Posts: 1
    I have a 2003 Tahoe with some gauge problems that seem to be intermittant. First it started with the speedometer. It would be fine, then freeze in position. If you turn the car off and then restart, it would start returning to zero. Of course that's if you start the car a couple of times to get the needle to "bounce" back to zero. Most of the time it's just the speedometer. Just today, I noticed the engine oscillating in RPM and the A/C fan doing the same. Doesn't do it all the time. Now the oil temp gauge is acting up. On a drive home, the temp went all the way to 80. Of course I stopped and checked the oil. Everything was fine. The water temp was in the normal range so I wasn't too concerned. Once I got home, I checked the voltage across the battery with the car running. The voltage reading was 12.9...well below 13.2 to 14.6 that its supposed to read. Figured the charging system was due for a check up. Checked the battery with the car off...voltage was 12.9. That's actually okay. Then restarted the car and found the battery voltage was reading 13.8. About normal for a charging system. (Scratching my head...) The speedometer thing has been going on for quite a while. Thank God I use a GPS so I know what my correct speed is. Now that other things are starting to crop up, I may have to take it somewhere to get it looked at. I am very disappointed in this vehicle. I spent over 40K on this thing. To have these electrical problems does not look good for GM!
  • kiawahkiawah Posts: 3,666
    edited July 2010
    Read the forums for prior discussions on gauge problems.

    There are companies you can send your instrument cluster off to, who rebuild/repair the gauges. One I visited, had a video showing how to easily take out the cluster.
  • I have a 2003 suburban that I took to Ed Bozarth Chevorolet. If they knew there were problems with the speedometer and fuel gauge when I took it in while it was under warranty, why didn't they just replace it then? Now they want to charge me $569 bucks to replace it. We drove up to the mountains and when we came back down, the car was stalling with no power while on the highway. It was pretty scary when it happened the first time and it happened 3 more times before we got home after about a 90 mile drive. I'm very disappointed after spending so much money on my suburban. What a sink hole for money. It will stall and then start right back up. Has anyone fixed this problem with the stalling. It doesn't happen all the time and I think it has something to do with heat but I'm not sure.
  • I have a 2003 Tahoe. My cluster panel went out about 2 yrs after buying the truck new. It took forever to get my dealership to fix it. Even at that time it was still under warranty. They replaced the entire BRAIN of the computer they said. At that time my dash board, the part that lights up when you start the vehicle, looked like pacman running across it. Well about 2 yrs ago my speedometer started going crazy. I looked down and it said 110 mph. As other post have said I without knowing just guessing would turn the key just enough so it would click and continue till it got back to 0 mph. Now that doesn't work. Regardless of the age of the vehicle or mileage. If Nissan, Toyota, Ford, Dodge have a mandatory recall on their autos, Chevrolet should be made to do the same. This is a very defective part. It could easily be a death trap if our vehicles are stalled, or suddenly decide they are going 120 mph. Its ridiculous to pay a 1000 dollars for something that obviously is a widespread problem. If it was 5 or 10 vehicles would be one thing but it seems to be alot of us with the same problems. Also I would like to say after looking over my receipt from the dealership where they installed the new computer mother board brain. That was under warranty at that time. States that it has no warranty on that service. Ha. Jokes on the consumer. I say we all contact Chevrolet and demand a recall on this issue. They need to fix our vehicles.
  • I have a 1999 Tahoe and my a/c and circulation buttons lights stay on when control unit is off, my a/c doesn't work I had replaced control unit and it worked for 2 weeks and now it stop working again. I checked ground and connections all ok, it does not have climate control. Also my lights come on when unit is off and when I turn the switch on the lights go off but my a/c doesn't work.
    I notice that my rear a/c works when the front switch is off, any ideas what it could be could it be in the computer and software? :confuse:
  • I am having the same problems... while driving my 2007 z-71 tahoe would completly loose all power, lights, stereo, EVERYTHING, but would power right back up on its own. the doors would unlock and lock on its own, and my dash says to service Stabilitrak. However tonight my tahoe lost all power while driving at night and didnt power back.... no brake lights or headlights or emergency flashers! Now it wont crank or do anything at all.... completly dead! the positive cable terminal got very hot so we disconnected it..... My Tahoe seems possessed!!! We bought this tahoe brand new and have not had a single problem one with it, until we added a after market stereo system and first the ignition would delay in starting and had to have a fuel line replaced and now the electrical problems! And no one seems to know what is going on with my car!! HELP PLZ!!
  • kiawahkiawah Posts: 3,666
    The good news is, that your problem is now consistently off. The dealership should be able to find/fix it.

    When a problem is intermittent (as in it comes and goes), then the tech might not be able to recreate the failure and see what's broke, so he knows what to fix. When the problem is solid, he can easily fix it.
  • i've had my tahoe at the dealership 6 times and so far they cannot determine why i loose all of the electrical power. they seemed to think it was due to the installation of an after market DVD player so they unhooked it but i still have the problem intermittently.
  • gmcustsvcgmcustsvc Posts: 4,001
    Hello Nealphx,
    Have you had the vehicle looked at since you disconnected the DVD player? Have you taken it back to the place you bought it from and said that you are experiencing concerns? Thank you,
    Mariah GM Customer Service
  • Yes, I have taken it back two times since the DVD player was unhooked but they still can't determine why this is happening.
  • gmcustsvcgmcustsvc Posts: 4,001
    Hello Nealphx,
    Because you are still experiencing the concern what I can do is set up a case with an agent for you. The agent would require that you take the vehicle to the dealership to be diagnosed for the concern. If the dealership is having a hard time finding the problem the agent can get the technical department involved. If you would like me to do this I will need you to e-mail me the following: contact information, current mileage, VIN, dealership and best time to contact you. You can get my e-mail by clicking on gmcustsvc. Thank you,
    Mariah GM Customer Service
  • Mariah, Thank you for your concern. I believe I already have a case open with GM but so far, I haven't seen any results. In any case, I have since filed a claim with the BBB in hopes of getting resolution through that channel.
  • gmcustsvcgmcustsvc Posts: 4,001
    Hello Nealphx,
    Thank you for getting back to me. I just wanted to make sure that you did get assistance. Because you filed with the BBB, they are going to do their own case and go from there. If you have any further questions please let me know. Thank you,
    Mariah GM Customer Service
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