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  1. #1
    Legend s5belford's Avatar
    Join Date
    Apr 2009
    Kalamazoo Michigan

    Question Dimming head lights?

    I have a 09 Silverado with 11,000 miles and the headlights seem to dim too easily. If I'm driving along at night with the windows up and try to roll up the windows (when checking to make sure they are closed) and the headlights dim at a very noticeable level.

    Has anyone experienced this?


    2009 Silverado LT1: All Star Edition
    5.3 Liter V8 4x4

    Locking Rear Differential
    3.73 Rear Axle
    Fog Lamps
    Factory Remote Start
    Locking Tailgate
    20" Wheels

    Rear Wheel House Liners
    Molded Mud Flaps
    Stainless Nurf Bars
    Driver Information Center
    20% Tinted Windows
    Low Profile Diamond Plate Tool Box
    GM Bed Liner
    Silver Birch Metallic Mirror Covers
    Silver Birch Metallic Vent Visors
    Flowmaster Super 40 (knock off)
    20" Wheels
    Bed Rail Protectors
    Extang Tonneau Cover

  2. #2
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    Tapping the power door lock buttons to the beat of the radio makes for a nice light show too.
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
    02 Honda Civic LX
    Looking for a 1990's Miata for an engine swap

  3. #3


    Mine does that all the time

    Quote Originally Posted by unplugged View Post
    Tapping the power door lock buttons to the beat of the radio makes for a nice light show too.

    I always find myself doing that.
    Bagged 06 Silverado Crew Cab.

  4. #4
    Master Mechanic TritonBoulder47's Avatar
    Join Date
    Nov 2009
    Tunkhannock, PA (North East)


    All my vehicles have done that...

    Tim a.k.a. Da' Boulder

    2003 Chevrolet Avalanche Z71 - Custom Emergency Response POV

    Firefighter, Fire Policeman, Ambulance Driver, Rescue Tech, Emergency Lighting Installer

    Tint, 20's, Bull Bar, Intake, Exhaust, Billet Grill, Stereo, Custom Console, Emergency Equipment, and the list goes on...

  5. #5
    TRPLXL2's Avatar
    Join Date
    Jan 2009
    Norwalk, Ohio
    Blog Entries


    Both of my Silverado's did that too, I think it's a quirk just like a Harley leaking oil they all do that LOL!
    2004 Chevy Colorado
    LS1 5.7 swap/TBSS rear axle swap

  6. #6


    Ive never noticed this happen on any vehicle I have driven, except the re-worked electronic system on the 2007+ GM vehicles - trucks, an 07 impala i drove once, and my moms 08 buick lucerne. I also saw a cobalt the other day that couldn't handle its stereo at a stop. The guy had a sub in it and everytime it hit, his brake light lost AT LEAST half of their brightness (although this was hardly the fault of the car - you just shouldnt put that into a car with and alternator that cant handle it at idle).

    2008 FORD F350. My new all-around truck.
    2001 Silverado Reg. Cab Not-So-Base -- SOLD
    2003 Avalanche Z71. No Cladding. Check out my Mod thread. - Crashed. Will be rebuilt soon.
    1974 Triumph Spitfire 1500 - Work in Progress
    2003 Sierra 3500 Duramax. The Newer, Better Work Truck -- FOR SALE

  7. #7

    Join Date
    Feb 2008
    Red Wing, Minnesota, United States


    Are your lights dimming when you are "driving" or waiting at a light at idle with the foot on the break. If you are driving there is no way that should ne happening, I would suspect a weak alternator, or loose connections.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual

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