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SEALIGHT® 2017-2018 Chevrolet Silverado 1500 Turn Signal Tail Lights Combo
Highlights
- Silverado Signal & Tail Light Kit: Fit for 2017-2018 Chevrolet Silverado 1500 trucks with 7443 front turn/DRL, 7440 rear turn and 7443 brake and tail sockets.
- White-to-Amber Switchback LEDs: SEALIGHT SLJ3 7443 LED turn signal bulbs run white for daytime running light and switch to amber for signaling, so the front end keeps a clean white look between turns.
- Instant-Response Amber Rear Signals: SLJ3 7440 rear LED turn signal bulbs give the truck an instant amber flash at the rear corners.
- Dual-Intensity Red Tail Bulbs: SLJ3 7443 red LED brake and tail light bulbs split output between a low tail glow and a bright stop flash, so the truck reads clearly in city traffic.
- Amber & Red Signal LED Bulbs: White/amber switchback and red tail-light bulbs serve distinct signal functions; confirm the specified bulb-socket configuration for the Silverado.
This Part Fits These Vehicles
Product Description
Tailored for Factory Sockets & Heavy-Duty Demands
"Designed by Silverado Owners, For Silverado Owners"
✔️ 2017-2018 Chevy Silverado 1500 All Trims (WT/LT/LTZ/High Country)
✔️ Factory halogen-equipped models (RPO code ZSA excluded)
✔️ OEM 7443/7440 rear light sockets
Do NOT use if your truck has:
➔ Factory LED package (check door jamb sticker for ZSA code)
➔ Aftermarket LED housings
What's Inside? Engineering-Driven Upgrades
1. Front Turn Signals & DRL
Model: SEALIGHT SLJ3 7443
Technical Highlights:
Switchback Technology: 6,000K white DRL / 2700K amber turn signal
Precision Optics: 120° beam angle matches GM TSB #17-08-44-001
Robust Build: Glass-reinforced nylon bases
View Details
2. Rear Turn Signals
Model: SEALIGHT SLJ3 7440
Engineering Focus:
800LM output with ECE R10 EMI compliance
Copper-core PCB withstands -40°F to 248°F
3. Brake/Tail Lights
Model: SEALIGHT SLJ3 7443
Safety-Certified:
0.1s activation meets NHTSA FMVSS 108
Dual-intensity circuit protects BCM modules
4. Reverse Lights
Model: SEALIGHT 921
Lab-Proven Performance:
2,200LM (SAE J593 compliant)
6500K color temperature (no blue tint)
5. Side Markers
Model: SEALIGHT SLJ4 7443
Durability Features:
IP67 waterproof rating (tested per IEC 60529)
UV-resistant polycarbonate lenses
Why This Kit Outperforms Generic LEDs
✅ Precision Heat Management
Copper-core PCB design reduces operating temperature by 28% vs aluminum-based competitors (verified through 1,000hr continuous testing)
Axial fan placement optimized for Silverado's tight tail light housings
✅ Voltage Spike Protection
11-16V dynamic input range matches Silverado's charging system fluctuations (per GM SI 2017-08-44-001A)
Reverse polarity protection prevents damage during trailer light hookups
✅ Optical Engineering
Front turn signals: 72° beam angle eliminates side blind spots
Reverse lights: 30° focused beam throws light 38ft (tested with 8ft bed + tailgate down)
✅ Proven Longevity
3,000hr accelerated life test showed <8% lumen decay (generic bulbs decay 35-50%)
Vibration resistance validated on simulated Silverado frame (20Hz-200Hz sweep test)
✅ Silverado-Specific Fixes
BCM-friendly design prevents U0184/U0199 error codes common with aftermarket LEDs
Dual-contact brake light bases solve hyper-flash with trailer wiring
What Competitors Avoid Disclosing
🔧 Heat Management Reality
Generic LEDs show 35% lumen decay at 1,000hrs (per UL 8750 testing). Our copper-core design maintains 92% output.
⚡ BCM Compatibility Risks
Non-GM-specific bulbs cause:
DTC codes U0184/U0199
Battery drain during cold starts
🎯 Optical Precision Matters
Our front turn signals use collimator lenses to:
Maintain 3.2° beam divergence (GM specification)
Prevent glare to oncoming traffic
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