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2021 GMC Sierra 1500 Owners Manual - Bulb Replacement



Bulb Replacement

For the proper type of replacement bulbs,

or any bulb changing procedure not listed in this section, contact your dealer.

This vehicle has several LED lamps. For replacement of any LED lighting assembly, contact your dealer.

    Turn Signal Lamps

See your dealer for headlamp replacement.

Base Level

    Open the hood.
    Turn the bulb socket counterclockwise to remove it from the headlamp assembly and pull it straight out.
    Remove the bulb by pulling it straight out of the bulb socket.
    Replace the bulb and reverse Steps 1–3 to reinstall.

Uplevel

See your dealer for headlamp replacement.

    Stoplamp/Turn Signal Lamp
    Back-Up Lamp

See your dealer for taillamp replacement.

It is recommended to replace the grommets when replacing a bulb. See your dealer.

To replace one of these bulbs:

    Open the tailgate.

    Remove the two rear lamp assembly screws.

    Pull the rear lamp assembly outward and rearward away from the box side to remove it from the vehicle.
    Turn the bulb socket counterclockwise.
    Pull the bulb straight out from the socket.
    Replace the bulb and reverse Steps 1–5 to reinstall.

This procedure is for the regular cab only. For crew cab and double cab see your dealer.

    Cargo Lamp Bulbs
    Center High-Mounted Stoplamp (CHMSL) Bulb

To replace one of these bulbs:

    Remove the two screws and lift off the lamp assembly.
    Turn the bulb socket counterclockwise and pull it straight out.
    Pull the bulb straight out from the socket.

To replace the bulb:

    Reach behind the rear bumper and locate the bulb.
    Turn the bulb socket counterclockwise and pull the bulb straight out of the socket.
    Replace the bulb and reverse Step 2 to reinstall.

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