GMC 812405942 Rear Right Marker Light Lamp Wiring Wire Harness

( Manufacturer Part Number: 812405942 ), ( Light Color: Undefined ), ( Vintage Part: No ), ( Placement On Vehicle: Rear, Right ), ( Type: Wire ), ( Oe/oem Part Number: Pelecx042 )

Review GMC Rear Right Side Marker Light Lamp Wire Wiring Harness Oem fits CANYON 2023–2025

The **GMC 812405942 2023 2025 Canyon Rear Right Marker Light Lamp Wire Wiring Harness** is a precision-engineered aftermarket replacement component designed to restore proper functionality and compliance to the rear right marker light assembly on GMC Canyon models produced between 2023 and 2025. This high-quality, OEM-specification harness combines a durable **marker light lamp** with an integrated **wiring assembly**, ensuring seamless connectivity and reliable performance without the need for extensive modifications. Crafted from **tough, automotive-grade materials**, the wiring harness features **shielded, corrosion-resistant conductors** that resist environmental wear, moisture, and temperature fluctuations, guaranteeing long-term durability even in harsh driving conditions. The **right-side marker light lamp** itself is engineered to meet or exceed factory specifications, delivering consistent illumination for visibility and regulatory compliance while maintaining a sleek, factory-matched appearance. The included wiring harness is meticulously designed to fit snugly into the vehicle s existing electrical system, with **pre-terminated connectors** that simplify installation, reducing the risk of loose or improper connections that could lead to electrical issues or safety hazards. Whether replacing a damaged or failing component or upgrading for enhanced reliability, this harness provides a **plug-and-play solution** that ensures proper signal transmission between the vehicle s lighting control module and the marker light, helping to maintain optimal visibility and adherence to traffic regulations. Ideal for professional installers and DIY enthusiasts alike, this component is a straightforward yet essential upgrade for maintaining the integrity of your GMC Canyon s lighting system.

### **Pros and Cons of buying a GMC 812405942 (2023-2025 Canyon Rear Right Marker Light Lamp, Wire, and Wiring Harness) as a Replacement Part**

1. **Direct OEM Fitment** This part is designed specifically for the 2023-2025 GMC Canyon, ensuring compatibility without modifications. It should align perfectly with the vehicle s wiring and mounting points, reducing installation errors.

2. **Complete Assembly** The package includes the marker light lamp, wiring, and wiring harness, which means you won t need to source additional components separately. This simplifies the replacement process and ensures all parts are matched for proper function.

3. **Reliability** GMC (and its parent company, General Motors) parts are generally built to last, especially when sourced from authorized dealers or reputable aftermarket suppliers. A genuine or high-quality aftermarket part reduces the risk of early failure.

4. **Easy Installation** Since the wiring and harness are included, you won t have to deal with mismatched connectors or extra splicing. This makes the job cleaner and less time-consuming, especially for DIYers.

5. **Safety and Functionality** Marker lights are critical for visibility and compliance with vehicle regulations. A properly functioning part ensures your Canyon meets legal requirements and operates safely in low-light conditions.

6. **Cost-Effective Alternative to Full Assembly Replacement** If only the marker light assembly is failing, replacing just this component is far cheaper than buying a full new tail light assembly or body panel.

7. **Warranty Coverage (If Purchased from Authorized Sources)** Some suppliers offer warranties on OEM or aftermarket parts, providing peace of mind against defects.

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1. **Potential Counterfeit Parts** If purchased from an untrusted seller (e.g., unverified online marketplaces or third-party resellers), there s a risk of receiving a knockoff part that doesn t meet GMC s standards. This could lead to poor fitment, electrical issues, or early failure.

2. **Limited Availability of Aftermarket Options** While OEM parts are reliable, they may be more expensive than generic aftermarket alternatives. However, not all aftermarket parts are created equal, and some may lack durability or proper certifications.

3. **Installation Complexity for Non-Mechanics** While the part is designed for easy replacement, wiring and connector issues can arise if the harness isn t properly seated or if the original wiring was damaged. Those unfamiliar with electrical work may struggle with testing continuity or securing connections.

4. **Compatibility with Modified Vehicles** If your Canyon has aftermarket lighting modifications (e.g., LED upgrades, custom body kits), the stock marker light may not integrate seamlessly. Some owners may need to adjust wiring or housing to accommodate changes.

5. **Price Variability** Prices can fluctuate based on supplier, region, and whether the part is new or refurbished. Overpaying for a part that could be sourced cheaper elsewhere is a risk if not shopping around.

6. **Potential for Shipping Damage** If ordering online, there s a chance the part could arrive damaged in transit, especially if not properly packaged. This requires inspection upon receipt before installation.

7. **Limited Longevity Compared to Full Assembly** While the marker light itself may last years, the wiring harness could degrade over time due to exposure to elements (moisture, heat, road debris). This might require future maintenance if the harness fails.

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The **GMC 812405942 (2023-2025 Canyon rear right marker light lamp, wire, and wiring harness)** is a **practical and efficient replacement part** for owners dealing with a faulty marker light. Its **OEM fitment, complete assembly, and reliability** make it a strong choice for those prioritizing quality and ease of installation. However, **buyers must ensure they purchase from a reputable source** to avoid counterfeit parts, and they should be prepared for minor installation challenges if not experienced with automotive electrical work.

For most DIYers and mechanics, this part is **worth the investment** due to its direct compatibility and long-term performance. If cost is a major concern, comparing prices across authorized dealers, GMC service centers, and trusted aftermarket suppliers (like RockAuto, AutoZone, or local auto parts stores) can help secure the best deal without sacrificing quality.

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1. **Purchase from an Authorized Source** Buy directly from **GMC dealerships, official GM parts suppliers, or well-reviewed aftermarket retailers** (e.g., RockAuto, AutoZone, Advance Auto, or local auto parts stores with return policies). Avoid unknown sellers on platforms like eBay or Facebook Marketplace unless they have verified feedback.

2. **Verify Part Number and Year Compatibility** Double-check that the part number **812405942** is confirmed for your exact **2023-2025 Canyon trim and configuration** (e.g., Denali vs. SLT). Some trims may have slight variations in wiring or housing.

3. **Inspect Upon Delivery** Open the packaging carefully to ensure the part is **undamaged, properly labeled, and includes all components** (lamp, wiring, harness, connectors). Test the wiring for continuity with a multimeter if possible.

4. **Follow Installation Guidelines** Refer to a **GMC Canyon repair manual** (Chilton, Haynes, or manufacturer s service guide) for step-by-step instructions. Pay special attention to:

- Properly routing wiring to avoid pinching or abrasion.

- Securing connectors tightly to prevent loose connections.

- Testing the light after installation to confirm functionality.

5. **Consider Professional Help if Needed** If you re uncomfortable with electrical work, a **GMC dealer or auto electrician** can install the part for a small fee, ensuring a professional job.

6. **Keep a Backup or Spare** Since marker lights are small and prone to damage (e.g., from rocks or impacts), consider keeping a spare in your trunk or garage for future use.

**Final Verdict:** This part is a **solid, no-frills replacement** that balances **cost, convenience, and reliability**. With the right precautions, it will serve your Canyon effectively for years to come.

Details:

Shipping FREE SHIPPING available for most items within lower 48 states. Donor vehicle: 2023 GMC CANYON ELEVATION CREW CAB PICKUP 4-DOOR SHORT BED 2.7L 4WD AUTOMATIC TRANSMISSION. Mileage: 48K MILES. This item has been previously used.

Color: RED GNT-VOLCANIC TINTCOAT EXTERIOR / BLACK H2Z-JET BLACK INTERIOR. Please verify it fits and is compatible with your specific model before purchasing.

part #: 812405942 prices

• $27.99-$44.99

specifications sidemarkeligh:

• for models: Canyon
• for makes: Gmc
• for years: 2023-2025
• mpn: 812405942
• light color: Undefined
• vintage part: No
• placement on vehicle: Rear, Right
• type: Wire
• oe/oem part number: Pelecx042

offer sidemarkeligh:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True
• started: March 5, 2026

returns sidemarkeligh:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

payments sidemarkeligh:

• credit card: Mastercard
• wallet: Apple-pay
• other

general sidemarkeligh:

• Car Truck Parts Accessories > Lighting Lamps > Side Marker Light Assemblies
• condition: Used

shipping sidemarkeligh:

• class: Standard
• cost: $0.00
• transit: 2-6 Days
• type: Fixed
• service: Standard

seller sidemarkeligh:

• # reviews: 77841
• city: Traverse City, Michigan
• rating: 99.9%

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