2009 lacrosse...compass, clock and milage lights sometimes stay real dim and then later pop up to normal brightness so I can read them...what goes ?

Sounds like you have a draw on the batteries. If your alternator has grounded a diode it will suck the power out of your batteries in no time. Easiest way to tell is to pull one of your negative battery cables and put a test light between the cable and the battery post. If you have a bright light on the test light, you are pulling a large power draw. You should have a very dim light as the only power draw should be coming from the clock, radio memory, and alarm. If you do have a bright light on the test light, remove the power cable to the alternator. If the light goes dim, you need to replace your alternator. If it stays bright, you still have a large draw, but now you need to track down the short. You can pull fuses in the distribution center one at a time until the light dims, this will tell you what circuit has the short. But you will need to trace the problem to find what needs fixing.

This is more than likely an internal fault in the instrument cluster since the other lights stay bright and you can control them. I suspect that you may need to remove the cluster and have it rebuilt to cure this problem

normally the cluster light are normally ajusted on most cars by turning the milage trip switch not sure what it called the bit you push in when you ajust your trip milage try turning that if its conected to the instrament cluster hope this makes sence cheers ivan

First, check that the battery connections are clean and not corroded. If not look for the ground wires that connect to the chassis. Check to see if any are corroded or loose. Finally if that has no effect, you have a short somewhere in your wiring. The easy way to isolate it is to pull the fuses for each device one by one and see if the dimming stops. The last one to cause the dimming is the problem. If it happens when you hit a bump it also might be a ground fault in the interior car grounds....good luck!

to fix this u will need a test light (borrow one or buy one there cheap if u dont have one)
disconnect the positive battery cable attach one end of test light to the positive battery post attach other end of test light to the disconnected battery cable if the light real bright start pulling fuses until the light goes out or goes real dim (the dim light is the draw from computer,radio,etc so small of draw wont hurt battery) once you pull the fuse that makes the light go dim or out check that circuit for short circuits

if when you put test light on light not on or real dim before u pull fuses you more than likely have a weak battery that wont hold a charge

Forgive me if I seem to be over simplifying, but have you have you tried rotating the knob to left of the steering wheel (below the a/c vent)? If you rotate it all the way clockwise, it 'clicks' and the dome lamp comes on. Rotate counterclockwise and the dome lamp goes off and you adjust the brightness of the interior lights.

you may need 2 light bulbs. check real close, if they go out compltely or really dim.... if dim, you have a ground wire issue, if they go out completely the bulbs are bad.

check the earth wire first,wattage on the bulbs in case their wrong or old type bulbs ,check supply voltage ,if all ok then fit aux spot lights .if still having a problem have eyes checked as over 40 the old peepers can deteriorate ,dont know the name of it but it can affect some people at a younger age than others,glasses will not correct this problem.

this problem seemed to go away when I jiggled the key switch or turned it off and on

Hi,If your car have more than 50 k miles ,try oxigen sensor...