Free Shipping. Ships in 1-3 Business Days
Price Match Guarantee
Safe/Secure Checkout
Questions? Chat or Call us: (409) 916-8280
Your GMC Yukon is a premium vehicle, and unfortunately, that makes it a prime target for catalytic converter thieves. The violation of finding your SUV disabled, coupled with the staggering cost and delay of replacing four converters, is a nightmare scenario.
The open undercarriage and high value of the four catalytic converters on your Yukon make it a lucrative prize for thieves. They can get in and out in minutes.
The MillerCat Shield is engineered to stop them in their tracks. By creating an imposing, multi-piece barrier secured with tamper-proof hardware, we eliminate the easy access they rely on. This isn't just a shield; it's a statement that your vehicle is protected by the best, forcing criminals to seek an easier, unprotected target.
Protect your investment and your peace of mind with the MillerCat GMC Yukon 2021+ Cat Shield—the most trusted name in catalytic converter security.
Industry Recognized: SEMA Award-Winning Design & Engineering
How to get the best catalytic converter protection for a 2021+ GMC Yukon? Use a shield designed for it. We use 3D scanning to create a shield that contours perfectly to your Yukon's underbody, providing comprehensive coverage for all four converters without any gaps or weak points for thieves to exploit.
A solid, unvented plate can trap dangerous amounts of heat, potentially damaging your transmission and exhaust components. Our shield incorporates carefully designed louvers that mimic the factory heat shield, promoting critical airflow and ensuring your vehicle operates safely within its intended temperature ranges.
Replacing the four catalytic converters on a modern GMC Yukon can cost upwards of $4,000, not including the potential for collateral damage and a lengthy wait for parts. The MillerCat shield is a proactive, one-time purchase that protects you from these astronomical costs and the severe disruption of having your vehicle out of commission.
| Vehicle Fitment | 2021+ GMC Yukon / Yukon XL |
| Material | High-Strength 5052 Aluminum |
| Hardware | Proprietary Tamper-Resistant Screw Kit |
| Included Tools | One (1) Security Screw Driver Bit |
| Installation | 100% Bolt-On (No Drilling Required) |
| Country of Origin | Made in the USA |
Yes. Our shield is designed based on the standard GM T1 platform chassis, ensuring compatibility with all 2021 and newer GMC Yukon and Yukon XL models, including Denali and AT4 trims, regardless of the factory suspension or powertrain.
No. The MillerCat shield is a 100% bolt-on product that requires no drilling, cutting, or permanent modification to your vehicle. It can be removed at any time, returning the vehicle to its factory condition, thereby not affecting your manufacturer's warranty.
Yes. The shield is designed to protect the catalytic converters and does not obstruct access to the transfer case drain and fill plugs. Routine driveline maintenance can be performed without removing the shield.
Replacement security bits are available. For security reasons, we require proof of your original purchase (like an order number or receipt) to verify ownership before sending a replacement bit. This ensures only legitimate owners can remove the shield.
While the shield can be installed by a DIYer with the right tools and a safe way to lift the vehicle, we do recommend professional installation for the best fit and finish. A typical auto shop can usually complete the installation in under an hour.
California Residents
Prop 65 Warning- Product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Proposition 65 is a California law passed in 1986. Its goals are to protect drinking water sources from toxic substances that may cause cancer and birth defects and to reduce or eliminate exposures to those chemicals generally, for example in consumer products, by requiring warnings in advance of those exposures.
The regulation requires the State of California to revise and republish yearly a list of chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. The current list contains over 900 naturally occurring and synthetic chemicals. This regulation also requires manufacturers to place warnings on products that contain any of the chemicals listed by the State of California. No other states require warnings of this nature, and products with Prop 65 warning language are legal to sell in all states. Detailed information regarding requirements for compliance to the California Prop. 65 is can be found at: www.P65Warning.ca.gov
We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ExtrailAuto.
The wait time was more than I anticipated even after seeing the notification of long lead times. I have to give them props for giving some compensation for the excessive wait time. Having slightly larger holes would help with fitment. Had a hard time getting the front drivers side away from the pinch weld. Eventually had to use washers to add space away from the truck. Need to update pictures and instalation video for the new sliders they are now making
All packing and shipment were great, everything was there. I had to contract out the install because of arthritis, it took them two hours and looks perfect. Zero wind noise at any speed 0 to 100.
Absolutely love my new rack and roam cases. Appreciate the Sherpa crew as well for their hospitality while the installation was taking place.
Fit and finish is excellent. Looks great on the Bronco. No whistling noise at all, some additional wind noise over 60mph but not much different than it was without the rack. Assembly was not too difficult. Instructions and videos could be a little better.
The quality and dedication of the team at Sherpa is evident from the very first interaction with them, and is further proven in the product itself. This rack is well engineered, easy to assemble, easy to adjust, and holds up incredibly well with no loosening or rattling or shifting (even after over 200 miles of driving on poorly maintained roads). Currently operating with approximately 180 pounds of gear mounted on the bed rack and no issues at all so far. I expected the vibration to work the bolts loose over time, but every time I check they're all still snug. My only regret is that I didn't pull the trigger and get this rack sooner.
First of all, the team at Sherpa is full of passion for adventure and that passion shows in the quality of their products. This roof rack looks incredible and surprised me with it's sturdiness. No loosening of hardware, even after weeks of driving. Currently holding approximately 80 pounds of gear for everyday driving, plus an additional 110 strapped on top during a camping trip (and I even stood on top of the entire loadout). No warping, bending, twisting, or slipping. The fact that this matches the bed rack perfectly in height is the icing on the cake. Easily serves as a tie off for a tarp, rain fly, hammock, or whatever you need. Perfect for modular campsite setup and quick teardown.
I bought the Sherpa Crestone rack for my 2024 4Runner TRD Pro. Incredibly well-made and excellent design. Spend the extra , to get best roof rack in the market. You won’t regret it.
This is our first roof rack that we are going to use to put a RRT (roof top tent) on for back country trips. Well-built product that came with all the nuts, bolts and washers to complete the installation. Took about 1-1/2 to 2 hours install the rack. You will another person to help place the racks on top of the Jeep for final install. Overall, a great, well-built American product
Install was super easy. The quality was great. Customer service was quick to respond to any issues! I’ve already been getting compliments on it and what brand it is. This will be great for camping this year!
This is on my tundra absolutely solid rack looks fantastic extremely modular, which is why I went this route. I can use the whole rack when traveling and over landing then rock the chase rack only when the rest is not in use, I actually use the recovery traction board mounts for my shower room set up, which works amazingly just relocated the board somewhere shown in picture keep innovating TUWAand I’ll keep purchasing.
Good looking cat shields made of stainless steel with cooling holes. Priced well, easy install, no issues. Would buy again.
Great service from their staff. Robert help me through all the process with a request I had, he responded all emails in a timely manner and provided great help.
We received it within 3 days and installed the same day. Great awning and very well made.
the tent is very nice, comfortable and roomy.
Following the instructions was fairly easy. Its better to have second person to set it up. I really like the tent and the support that from ExtrailAuto. Really recommeded! Thanks
