Take back control of your low beams, high beams, and running lights with the Standard Ignition Headlight Switch HLS-1644. It drops in as a direct-fit replacement for the 2007-2008 GMC Acadia — see the Buyer's Guide tab for engine-level fitment details.
This electrically operated switch is built to take over the lighting-control duties of a worn or damaged original unit. If a failed headlight switch is the cause of your lighting trouble, replacing it with the HLS-1644 restores the switch's job of commanding headlight operation.
- OE-spec build: made to OE specifications for proper fit, form, and function.
- Copper alloy conductors: deliver strong electrical conductivity with low resistive losses.
- Direct-fit replacement: an electrically operated switch that replaces a damaged OE unit to restore headlight function.
- Robust design: high-grade materials meet the demands of today's service professional.
A worn switch can show up as flickering headlights, lights that won't turn on or off, or inconsistent operation of the beam and running-light circuits — signs this part may need replacing.
Interchange: S10511 · SW8680 · HL7669 · 15251883 · 25822154
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicle does the HLS-1644 fit?
It is a direct-fit replacement for the 2007-2008 GMC Acadia. Check the Buyer's Guide tab to confirm fitment for your vehicle.
What does a headlight switch do?
It is the electrically operated switch that commands your headlight circuits, letting you turn the low beams, high beams, and running lights on and off.
What are signs my headlight switch may be failing?
Common signs include flickering lights, headlights that won't turn on or off, or inconsistent operation of the beam and running-light circuits. Diagnose the cause before replacing.
Is this switch made to OE specifications?
Yes. It is made to OE spec for proper fit, form, and function, with copper alloy conductors for strong conductivity and low resistive losses.
What numbers does this switch interchange with?
It cross-references S10511, SW8680, HL7669, 15251883, and 25822154.
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