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  1. #1
    Jr. Apprentice
    Join Date
    Oct 2011

    Default Problems with Keyless Locking System

    Just purchased a very nice 2003 Silverado Ext Cab Z71. One owner , 68000 miles. Everything on this truck has worked flawlessly up to now. I have replaced the batteries in both units. The locking button on both units is working fine, it will lock the doors and set the alarm. The problem is with the unlock. One unit doesn't work at all, the other is working on a part time[whenever it feels like it] basis. This is the first vehicle I have ever had with this option, so I first read the owners manual, and then replaced the batteries. Is it that the buttons just wear out and you have to replace the unit, this does'nt make sense to me that the locking button is working fine on both unit's, it's the Unlock. Any help would be greatly appreciated.

  2. #2


    I do not know if this info is helpful, but it worked for me on the remote for a previous vehicle.

    The contact surface was dirty under the buttons.

    Open the remote and remove the circuit board, the buttons and the contact surface should be visible. Clean both, use a dry cloth and a pencil eraser. Re-assemble and try.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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  4. #3


    Im with him^

    2009 Chevrolet Silverado 1500 LT Z71 Crew Cab "All-Star Edition"

    Line-X'd Bed
    Line-X'd Custom Brush Guard(Heavy Duty)
    5.3L Flex Fuel
    275/65R18 Toyo Open Country AT2's
    2" Rough Country Leveling Kit(want to get the 2.5 RC kit)
    EGR In-Channel Vent Visors
    Exterior PLUS Package
    Interior PLUS Package
    K&N Drop-In Air Filter
    Cat-Back Dual Exhaust
    Black Bowties
    Diablo Sport Predator(AFM Disabled)
    Towing Mirrors
    Next Planned Mods
    Blacked out Tail Lights
    Aftermarket Rims

  5. #4


    If cleaning the contact surface does not fix the issue, try reprogramming the remotes to your truck prior to replacing them. Here is a link to the programming instructions.
    Vanessa (Fife, WA)
    2007 4x4 Silverado LT
    6" Superlift / Leveling Kit / Superchip
    MBRP Cat Back Performance Exhaust
    35" Tires / 19" Wheels / Smittybilt Nerfs
    Custom 2 Tone Leather Interior

    1978 3/4 Ton K5 Blazer Monster Truck
    8" suspension lift, 3" body lift
    44" tires, 16.5" wheels

  6. #5
    Jr. Apprentice
    Join Date
    Oct 2011


    Thank You, I will give it a try, long live GM.

    - - - Updated - - -

    Thanks a bunch, one awesome looking truck there.

  7. #6
    Jr. Apprentice
    Join Date
    Oct 2011


    Thanks a bunch, it worked .

  8. #7


    Good Call @RayVoy!

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors,
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

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