As an automotive expert and sales rep at CARiD.com, I've had the chance to help countless diesel GM truck owners dive into the exciting world of exterior modifications. These mods aren’t just about making your truck look good; they significantly enhance both the functionality and aesthetics of your vehicle, setting it apart on highways and back trails.




At CARiD.com, we specialize in high-quality, truck-specific mods that cater to the needs of enthusiasts looking to personalize and upgrade their rides. Whether it’s improving utility for rugged activities or enhancing street presence, the right modifications can transform any standard truck into a standout performer.


Custom Grilles




One of the most impactful modifications you can make to your truck is upgrading the grille. A custom grille not only revitalizes the front-end appearance of your Chevy or GMC but also boosts the truck's performance. How? By improving airflow to the engine, which is crucial for maintaining optimal engine temperatures and efficiency, especially in diesel models that work harder and often tow more.

T-Rex® - Billet Grille


(Over 200 positive reviews with an average rating of 4.7 out of 5 ⭐⭐⭐⭐⭐)

You can read the reviews here:

Key features:

• Available in vertical and horizontal designs, depending on the application
• Comes in a choice of polished and black finish options
• Constructed from aircraft quality 6061/6063 billet aluminum
• Backed by a lifetime structural warranty and a 3-year warranty on finish
• Proudly designed and manufactured in the USA

At CARiD.com, we offer a wide array of grille styles, including robust billet grilles, sleek mesh grilles, and innovative LED grilles. Each style is designed to fit various Chevy and GMC models, ensuring a perfect blend of form and function. Whether you prefer the bold, imposing look of a billet grille or the sophisticated touch of a mesh pattern, there’s something to suit your personal taste and your truck’s specific requirements.


When selecting a grille, my advice is to consider how it will integrate with your truck’s overall design. You want a grille that not only looks great but also enhances engine performance by facilitating better air intake. I also recommend considering the durability of the material and the ease of installation. A well-chosen grille not only complements your truck’s aesthetics but also contributes to its long-term performance and cooling needs, making it a wise investment for any serious truck owner.


Fender Flares




Fender flares are more than just a decorative accessory; they are a crucial addition for many Chevy and GMC diesel trucks, especially those equipped with larger or wider tires. They extend the profile of your fenders, offering additional coverage and protection against mud, rocks, and road debris that can be kicked up by aggressive tires.

Bushwacker® - Pocket Style™ Fender Flares



(Overwhelmingly positive reviews with an average rating of 4.7 out of 5 ⭐⭐⭐⭐⭐)

Read user reviews here:

Key features:

• Extended tire coverage to reflect road debris
• Specifically designed for mid- and large-sized wheel and tire combos
• Made from Dura-Flex 2000 plastic for ultra strength and durability
• 100% UV-protected to prevent sun damage
• Can be painted to match your vehicle's color
• All necessary hardware included
• Made in the USA
• Limited lifetime warranty

At CARiD.com, we provide a variety of fender flare styles, from wide ones that offer maximum protection and aggressive aesthetics to flat styles that provide a subtler enhancement to your truck's silhouette. Each style has its advantages, but all are designed to protect your vehicle’s body while complementing its rugged appearance.


Choosing the right fender flares involves considering both the practical benefits and the aesthetic appeal. You want flares that not only protect your truck’s sides from splashes and debris but also enhance its visual appeal. For trucks that frequently traverse rough terrain, I often suggest wider flares as they offer more comprehensive coverage. It’s also crucial to select flares that match the body lines of your truck to maintain a cohesive and rugged look. At CARiD.com, we ensure our fender flares are easy to install and are made from durable materials that stand up to the challenges of off-road driving.


Custom Hoods


One of the most impactful modifications you can make to your Chevy or GMC diesel truck is upgrading to a custom hood. Not only does this elevate the truck's visual appeal, but it also provides significant functional benefits. At CARiD.com, we understand the importance of balancing style with performance, which is why our custom hoods are designed to do more than just look good.

Amerihood® - Custom Hood

Average rating: 4.6 out of 5 ⭐⭐⭐⭐⭐

Check out user reviews here:

Key features:

• Stylish and aerodynamic
• Functional ram air tunnel build-in, no extra charges!
• Easy installation, utilized factory hinges and latch

Custom hoods enhance cooling and reduce weight, which can be crucial for diesel engines that generate considerable heat. Our selection includes vented, scooped, and cowl hoods, each offering unique advantages. Vented hoods allow hot air to escape more efficiently, improving engine performance. Scooped hoods direct outside air to the engine intake, which can help with both cooling and performance. Cowl hoods provide more space under the hood, which is beneficial for modifications that require extra clearance.


When choosing a custom hood for your diesel truck, consider how each design might meet your specific performance needs. It's important to select a hood that not only enhances the look of your truck but also contributes to its overall performance. The right hood should improve engine efficiency and durability, making it a valuable upgrade for any serious truck enthusiast.


Running Boards




Running boards are another excellent addition to Chevy and GMC diesel trucks, especially those that are lifted. They not only make entering and exiting the vehicle easier and safer but also add a layer of protection to your truck's sides. At CARiD.com, we offer a wide range of running boards, including step bars and powered running boards, each designed to suit different needs and preferences.

SteelCraft® - 3" Side Steps



Popular kit with an average rating of 4.7 out of 5 ⭐⭐⭐⭐⭐

Read what users say about these steps:

Key features:

• Heavy-duty 3" round tubing
• Nonslip polyethylene step pads
• No-drill installation

Step bars provide a sturdy, fixed step that is ideal for trucks used in rugged conditions. Powered running boards, on the other hand, offer a sleeker, more high-tech solution. They extend when the door is opened and retract when closed, maintaining the truck’s aerodynamic profile and ground clearance when not in use.


Selecting the right running boards involves considering the height of your truck, your typical passengers, and your personal style preferences. Look for running boards that provide reliable traction and durability, while also complementing the overall design of your truck. Whether you choose traditional step bars or go for the more modern powered option, running boards are a practical upgrade that enhances both the functionality and appearance of your vehicle.


Tonneau Covers




A crucial yet often overlooked aspect of truck customization is the addition of a tonneau cover. This accessory plays a vital role in not only enhancing cargo security but also improving the overall aerodynamics and fuel efficiency of your Chevy or GMC diesel truck. At CARiD.com, we offer a diverse range of tonneau covers, each designed to meet different needs and preferences.

TonnoPro® - TonnoFold Soft Folding Tonneau Covers



Average rating: 4.8 out of 5 ⭐⭐⭐⭐⭐

Read user reviews here:

Key features:

• Robust aluminum frame for lightweight and durability
• Weathertight rubber seals keep the elements out
• Slide lock system provides extra security
• Dual-coated vinyl top for maximum protection and style
• Nylon straps secure the folded panels in place
• Fast, no-drill installation with quick clamps
• Oversized foam corners to keep water out

We feature tonneau covers in various styles including roll-up, fold-up, and retractable designs. Roll-up covers offer simplicity and quick access, making them ideal for truck owners who frequently need to use their truck bed. Fold-up covers provide more security and can be partially opened for easy access, while retractable covers offer the ultimate in convenience and security, smoothly sliding open and closed with minimal effort.


When selecting a tonneau cover, consider how you use your truck bed, the level of security you need, and how much you value convenience. It's also important to choose a cover that complements the style of your truck, ensuring that it not only adds functionality but also enhances your truck’s overall aesthetic. Look for durable materials and easy-to-use mechanisms that provide reliable protection and fit seamlessly with your truck’s design.



These modifications can dramatically transform both the appearance and functionality of your truck. Each recommended upgrade is designed to enhance your truck's performance while also tailoring its look to reflect your personal style. I encourage all Chevy and GMC diesel truck owners to consider these upgrades. Not only can they make your truck more practical and enjoyable to use, but they also allow you to express your individuality on the road.