85659309 GM Extension Panel

Review GM Genuine Extension Panel

The GM 85659309 Extension Panel is a crucial component of certain GM vehicles, designed to provide additional space and functionality to the factory wiring harness. This panel is specifically engineered for select applications, including the 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 models with the 5.3L V8 engine and a 6-speed automatic transmission.

Measuring approximately 10 inches long, 9 inches wide, and 3 inches high, this extension panel fits neatly behind the vehicle's dashboard or other accessible areas, depending on the specific application. It is made from high-quality, automotive-grade materials, ensuring durability and resistance to the harsh conditions often encountered in automotive environments.

The extension panel features multiple wire connectors, offering a total of 17 positions for various electrical connections. These connectors are designed to accommodate a range of wiring sizes and types, making it a versatile solution for various aftermarket modifications and upgrades. The connectors are also color-coded for easy identification of each wire, ensuring a more efficient and accurate installation process.

One notable feature of the GM 85659309 Extension Panel is its integrated, factory-style fuse box. This fuse box is compatible with the original equipment and can accommodate up to 15 standard automotive fuses. This feature not only simplifies the installation process but also ensures a clean and organized wiring setup within the vehicle.

Another advantage of the extension panel is its modular design, which allows for easy integration with other GM vehicle systems. It can be used in conjunction with other OEM wiring harnesses, expansion harnesses, and accessory wiring harnesses to create a more comprehensive and customized electrical system for your GM vehicle.

Installation of the GM 85659309 Extension Panel is relatively straightforward, thanks to its plug-and-play design. It simply connects to the existing wiring harness using the provided connectors, requiring no modifications to the factory harness or vehicle body. This makes it an ideal solution for DIY enthusiasts and professional installers alike.

In summary, the GM 85659309 Extension Panel is an essential accessory for certain GM vehicles that require additional wiring capacity for various modifications or upgrades. Its high-quality construction, versatile design, and easy installation make it a must-have for anyone looking to enhance the electrical system in their GM vehicle.

The GM 85659309 extension panel is a component used in some GM vehicles for emission control. Here are some potential pros and cons of buying this part:

1. Improves Emission System: This extension panel is designed to enhance the performance of the emission control system in your GM vehicle. By ensuring the system functions efficiently, it helps in reducing harmful emissions, contributing to cleaner air.

2. Enhances Engine Performance: A well-functioning emission control system can lead to improved engine performance. The extension panel can help maintain the efficiency of the system, which in turn can lead to better fuel economy and smoother engine operation.

3. OEM Part: The GM 85659309 extension panel is an Original Equipment Manufacturer (OEM) part. This means it is specifically designed and manufactured by General Motors for use in their vehicles. Using OEM parts can ensure a proper fit, better durability, and potential warranties.

1. Cost: OEM parts, like the GM 85659309 extension panel, can be more expensive compared to aftermarket alternatives. The cost may vary depending on the specific vehicle make and model.

2. Availability: Depending on the vehicle's make and model, availability of OEM parts like the GM 85659309 extension panel may be limited. This can result in longer waiting times for repairs or replacements.

3. Installation: Installing an extension panel like the GM 85659309 may require professional assistance. This could add to the overall cost of the repair or replacement.

The GM 85659309 extension panel offers several benefits, including improved emission system performance and potential engine performance enhancements. However, it comes with a higher cost compared to aftermarket alternatives and may have limited availability. If the emission control system in your GM vehicle is causing issues, and you're looking for a reliable and efficient solution, the OEM extension panel could be a worthwhile investment. However, it's essential to consider the cost and availability before making a decision. Ultimately, the choice depends on your priorities and budget.

If you're experiencing problems with the emission control system in your GM vehicle and are looking for a reliable and efficient solution, consider purchasing the GM 85659309 extension panel. However, be sure to weigh the potential benefits against the cost and availability before making a decision. If cost is a significant concern, you may want to explore aftermarket alternatives. Always consult with a professional mechanic or GM dealership for the best advice based on your specific situation.

Details:

Changed my mind. Just didn't like it. Found a better price.

specifications splashflaps:

• brand: Gm
• mpn: 85659309
• part type: Panel
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 17 On The Diagram Is Included
• replaces part number: 85569399

offer splashflaps:

• prices: $68.36–$120.91
• item condition: New
• started: october 24, 2025
• in stock #: 2
• availability: in stock
• options: ship-to-home
• sold #: 14

shipping splashflaps:

• class: standard
• type: fixed
• carrier: fedex
• transit: 5-12 days
• service: fedex ground / fedex home delivery

returns splashflaps:

• time: 30 days
• paid by: seller
• policy: returns accepted

seller splashflaps:

• rating: 97.7%
• # reviews: 21871
• city: garland, texas

general splashflaps:

• category: Auto Parts > Exterior Accessories > Protection > Splash Guards Mud Flaps

payments splashflaps:

• credit card: diners-club
• wallet: apple-pay
• other