GTMOTO D3S HID Bulbs for 2013–2017 Cadillac XTS — 6000K Xenon, 35W OE-Style

GTMOTO D3S HID bulbs are a 6000K xenon replacement built to restore brighter, whiter low/high beam performance in 2013–2017 Cadillac XTS adaptive bi-xenon headlights.

If your XTS headlights have grown dim or feel yellow compared with modern white light, these GTMOTO D3S (C1) high-intensity discharge bulbs are a direct OE-style swap designed specifically for the 2013–2017 Cadillac XTS (including V‑Sport, Platinum, Premium, Luxury, Livery adaptive headlights). They deliver a cooler 6000K color temperature, faster warm-up, and higher perceived brightness than typical 4300K stock xenon bulbs while keeping the 35W/42VAC HID system form factor.

How much brighter and whiter will the headlights look?

Expect a visibly whiter beam and improved contrast at night compared with aging 4300K xenon bulbs. GTMOTO rates these D3S bulbs at roughly 1.5× perceived brightness over worn factory lamps while maintaining proper HID light characteristics for projector housings.

• 6000K cool daylight white color for crisper road detail and contrast
• Perceived brightness increase compared to dim 4300K stock bulbs
• Sharp projector cutoff retained for low/high bi-xenon systems

Will these bulbs fit my Cadillac XTS without modification?

Yes — these D3S C1 bulbs are made as direct replacements for vehicles that use 35W/42VAC HID xenon D3S capsules. They are designed to plug into OE-style sockets and work with existing HID ballasts used in 2013–2017 XTS adaptive headlamp modules.

• Direct D3S C1 form factor — no trimming or rewiring needed
• Compatible with OE HID ballasts in XTS bi-xenon projector assemblies
• Quick 10‑minute installation per side in typical conditions

How long will these xenon bulbs last and how quickly do they reach brightness?

GTMOTO manufactures these bulbs from anti-UV quartz glass using precision laser cutting for durable construction and stable output. They warm to top brightness fast — xenon discharge lights reach usable output in seconds and stabilize quickly, unlike older filament bulbs.

• Durable quartz glass construction for long service life (rated over 3000 hours)
• Instant xenon discharge with short warm-up to full output
• Factory-like longevity with consistent color over life span

What should I check before ordering to ensure compatibility?

Confirm your vehicle uses D3S 35W/42VAC HID bulbs rather than DC 12V halogen or other bulb types. These GTMOTO bulbs are not compatible with halogen sockets (H1/H7/H11/HIR2/9012/9006 etc.) or 55–60W halogen/LED conversions without appropriate HID ballasts and wiring.

• Verify the replaceable bulb in your XTS is D3S (C1) HID 35W/42VAC
• Not compatible with standard DC 12V halogen filament sockets
• Works with existing OEM ballast; no extra ballast required in most OEM HID systems

Who is this for: GTMOTO D3S HID bulbs are aimed at Cadillac XTS owners (2013–2017 models, including V‑Sport and other trim levels) who want a whiter, brighter HID look and improved视觉 clarity without altering the factory headlamp system. If your XTS still uses original xenon bulbs that appear yellowed or dim, these D3S replacements restore modern 6000K daylight color, fast startup, and projector-friendly beam pattern while fitting directly into the vehicle’s existing HID hardware.