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Buick Lucerne Electrical/Lighting



  • I bought a 2008 Lucerne one month ago, and I have the same problem.
    GMC is giving me the same BS. The guage is suppose to move around.
    I drove a bus for 37 years, and I know what I am talking about.
    Its probly the same as the dash not being seen in the sunlight a couple years ago..
    They have a defect and doint know or want to fix it.
  • rmellormello Posts: 11
    I have been fighting with Buick for over 1 year -no results. In Nov I sent a letter to:

    Jim Bunnell
    General Manager, Buick-Pontiac-GMC
    100 Renaissance Center
    Mail Code: 482-A29-D76
    Detroit, MI 48265-100

    I received a call from Detroit just before XMAS, I am waiting for a call back. This will be my last attempt to solve this problem. Next car will not be a Buick.

  • This message updates and corrects information in message #1 of 5 on the above subject. The vehicle in question is a 2007 Buick Lucerne CXS, not a "DTS" as originally cited. I apologize for the inexplicable brain fade and should have corrected this error much sooner.

    The fuel sensing and display gripe described in my original post still exists. The fuel tank fuel level sensor has now been replaced twice with no corrective effect. The dealer's service manager subsequently escalated the problem within GM and was advised to run electrical continuity and resistance checks on all wiring and devices in applicable fuel sensing and display circuits. No problems were found. On two occasions, I've had DIC "low fuel" warnings with well over 8 gallons of fuel remaining. I've learned that other Lucerne (and some Cadillac) owners who bought from and have vehicles serviced at this dealership have reported similar fuel gaging inaccuracies that have not been solved. This problem is apparently far more widespread than GM acknowledges and the work-around fix seems to be "fill up often". Inattentive gage watchers should keep comfortable walking shoes in the trunk.
  • rmellormello Posts: 11
    Good Luck with replacing the fuel tank lever. Buick replaced mine and it did not solve the problem. I belong to AAA and according to them, the problem is with the compute(s). They are programmed with incorrect specifications and Buick does not have a fix.
  • Do you have a link or other reference to AAAs information about the Buick fuel level indication problem? That would be helpful. Thanks
  • rmellormello Posts: 11
    AAA has John Paul referred to as the "Car Doctor". He told me about the fuel gauge computer problem.

    Hope this helps.
  • God, would it be that I only had your problem. I wouldn't care if I didn't have a gas gauge at all, if that was my only problem.. What I do have is:
    Vibration at highway speeds
    Pulls to the right
    Transmission noises
    Steering noises
    Wind noise
    Car dead, no electrics (Twice now)
    Lower body trim falling off
    Trunk release failed
    Headliner detached
    Loose transmission inspection plate
    Transmission leak
    Remote mirrors, no memory return
    Remote sometime, sometimes not
    Heated sometime, sometimes not
    Warped front brake disks
    Dash lights too dim
    Electrical plug in rear door detached
    Engine knocks
    Rattle in the 6 CD changer
    and of course a crazy fuel gauge.

    There is more, but I am getting angry again and am shaking too much to type. This piece of crap will be traded for a Lexus before the warranty is up. I pity the next owner. What a sucker I was.
  • rmellormello Posts: 11
    Sorry to hear about your many problems, I have read many reports by other Lucerne owners with many of the same problems as yours. Fortunately, my only problems is with the instrument readings. Besides the fuel gauge, the outside temp gauge is always wrong -off as much as 17 degrees-, the tach gives incorrect readings, the instrument cluster is difficult to see in the daytime -especially if wearing sunglasses. As I have stated before, I have contacted Buick many times, even wrote a letter to the President of Buick, no response. This will definately be my last Buick.
  • My 2005 and current 2008 Allure(LaCrosse) have the same inaccurate fuel gauge readings. I have never thought of this to be a problem as I use the trip odometer to determine the next fill up. My brother-in-laws 2006 Allure provides accurate reading.
  • rmellormello Posts: 11
    I have been driving for over 50 years and this is the first car -and the most expensive I have ever owned- that does not give me accurate readings. For what I paid for this car, I want all my gauges to work properly. What car ever built requires you to drive 10+ miles before the fuel gauge gives an accurate reading? Or, what car ever built -according to Buick- requires you to find a level spot on the road and restart the engine to get an accurate reading before you start a trip?

    This to me is pure nonsense.
  • imidazol97imidazol97 Crossroads of America I70 & I75 Posts: 21,496
    I read your post about fuel gauge readings... I found this in a quick search of the net and it makes sense.

    "Fuel gauge: The engine may not start or may stall because the tank is empty yet the gauge shows fuel remaining, or the fuel gauge will not show full after refilling due to sulfur corrosion of the fuel level sender and, if after treating with Fuel System Cleaner PLUS the problem remains, the sender may need to be replaced. (2004-06) "

    I recall some gasolines have had trouble with too much sulfur (or not the right additives to handle the sulfur) from a couple years back. That included a name brand in the Louisville area. I have a suggestion.

    At Pepboys or Advanced Auto or Meijers or Walmart they sell Techron Fuel System Cleaner additive by Chevron. I think there's even a rebate for all of the purchase price back on the 12 oz bottle that I saw in an ad within the last week. Maybe a company rebate rather than the chain store... Note this is Fuel System Cleaner. There's another version called Injector Cleaner, which I believe to be weaker.

    The bottles say it can help protect your fuel gauge from malfunctioning. I would use the 12 oz bottle as directed. Put in with tank almost empty at the gas pump. Put in up to 12 gallons or 20 gallons of fuel. Then drive without adding fuel until almost empty. It may clean the corrosion off the contacts that rub for the fuel gauge to give the reading on fuel level. You might use it a second time. But don't use it continuously. I use it one or two times a year in my leSabres. It always makes the engine seem better after a few miles when I put it in. I don't believe in additives but this one was recommended years ago by BMW and then others to clean injectors and deposits before gasolines additives were improved. It's the additive blends Chevron/Texaco put in their fuels.

    2015 Cruze 2LT, 2014 Malibu 2LT, 2008 Cobalt 2LT

  • rmellormello Posts: 11
    What you are describing is not my problem. My fuel gauge problems started from day one when I purchased the car new (Aug 2006). I have had several contacts with other Lucerne owners experiencing the same problem as I. This problem is occurring in the 2007 and 2008 models. As for LeSabres, I have owned two, a 1989 and a 2002 both purchased new and never had any problems with the fuel gauge -always giving me correct readings. As I stated before, I have been driving for over 50 years and never had any problems with fuel gauges on any car I have owned. This is a Buick screw up.
  • rjwelshrjwelsh Posts: 4
    Since I took delivery of my new Buick Lucerne CXL the gas gauge has never read properly. It either reads right or a quarter tank less than what is in the tank. GM has checked all the wiring, dropped the gas tank? and replaced the sending unit as well as the computer upgrades. Nothing they have done has fixed the problem. If anyone hears of a fix please advise. Thanks Bob
  • I had a gas gauge problem on my 1999 Cadillac w/Northstar engine... the Fuel Pressure Regulator was replaced & it resolved the issue..... I do not know if my 2007 Lucerne CXL has the same part as I not having an issue @ this time....Good luck....
  • rmellormello Posts: 11
    If you are not having a problem with your fuel gauge, you are fortunate. Owners of 2007 and 2008 Lucerne's are experienicing the same problem as me. Again, according to Buick, this is their design and may take up to ten miles of driving for the fuel gauge to correct itself. They are right as I have tested this several times.

    Not sure why yours work correctly and mine doesn't.
  • rmellormello Posts: 11
    Buick has a fix for the darkness of the instrument cluster, I had it done on my 2006 Lucerne. They completely replace the instrument cluster with a cluster that has bigger and brighter numbers. The cluster still does not light up during daytime but, the bigger cluster is definately easier to see. It takes about 1 hr to make the change.

    Hope this helps.

  • rjwelshrjwelsh Posts: 4
    I received a document ID #2074841 #PIC4799 concerning my fuel gauge problems with my 07 Buick Lucerne CXL from General Motors. This is a problem for 2006-2008 Buick Lucerne and Cadillac DTS models. Should anyone wish a copy of the service bulliten please let me know.

  • b88lazerb88lazer Posts: 21
    I would like to get a copy of the TSB you cited in post 20 of 20. How can we arrange that? Thanks
  • cordinercordiner Posts: 2
    I would like a copy of the document you mention in post 20. Many thanks!
  • rjwelshrjwelsh Posts: 4
    I could mail a copy to you?? Bob
  • b88lazerb88lazer Posts: 21
    I appreciate the offer, Bob, but can't think of a way to enable your suggestion unless one or both of us puts an email address, phone number or postal address in a post available to any casual reader. One option is to contact a dealer with the numbers you kindly provided and hope the dealer will make the info available. Perhaps the forum host has a thought?
  • imidazol97imidazol97 Crossroads of America I70 & I75 Posts: 21,496
    You can send each other info on your carspace page. At the top of the page is a header with black print "My Carspace." Send an email from the carspace page (email is on the right) to the other user with their address as You can decide how to communicate from there if that's not sufficient!

    Or you can join a junk email group like yahoo and then give that email in the comments area on your Forum Profile. Anyone else can see your profile by clicking on our user name on any post!

    Another method is scan the document, post it on (free account there) and then post here the link to the document there. Anyone reading here could click and read the document just like people post their car pictures for here on Edmunds.

    Or you can scan it and post in your pictures area on your MyCarspace.

    2015 Cruze 2LT, 2014 Malibu 2LT, 2008 Cobalt 2LT

  • Karen_SKaren_S Posts: 5,095
    imidazol97 beat me to the punch! :)

    Edmunds Manager UGC Click on my screen name to send a personal message. Need help navigating? Check out Getting Started in Edmunds Forums.
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  • imidazol97imidazol97 Crossroads of America I70 & I75 Posts: 21,496
    I missed pointing out if you have a good close focus digital camera you can take a picture in good light and post the picture in place of a scan using techniques suggested above.

    2015 Cruze 2LT, 2014 Malibu 2LT, 2008 Cobalt 2LT

  • proftproft Posts: 1
    Please send me a copy of your Buick document ID #2074841 #PIC4799 .


  • rjwelshrjwelsh Posts: 4

    I would be glad to. How can we accomplish this thru this forum??

  • imidazol97imidazol97 Crossroads of America I70 & I75 Posts: 21,496
    >I would be glad to. How can we accomplish this thru this forum??

    You can scan or take a photograph with a digital camera to get a digital picture of the papers. Then you can post them as an image or a link to the image in your post. One way is to upload the digital images to your carspace account into your photographs. Another is to upload to photobucket (free) or an equivalent hosting service that stores your digital images and lets you link to them.

    By posting a link in the post, someone reading your post later can go to that link and see them in your photobucket account (or carspace account),.

    A problem with carspace pictures is there is a graphic advertising carspace that's on the bottom corner.

    I use photobucket most of the time.

    2015 Cruze 2LT, 2014 Malibu 2LT, 2008 Cobalt 2LT

  • Is there a charge for this fix?
  • How do you change a rear turn signal bulb in a 2006 buick lucerne?
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