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Your GMC Sierra 1500 is a prime target for catalytic converter thieves. Its high ground clearance and four valuable converters make it a quick and profitable job for criminals, leaving you with a disabled truck and a repair bill that can easily exceed $5,000.
Secure your vehicle and your peace of mind with the MillerCat GMC Sierra 1500 2019+ Cat Shield, the ultimate defense against this costly crime.
A thief's greatest assets are speed and silence. The MillerCat Shield robs them of both. By creating an imposing, multi-plate barrier secured with tamper-proof hardware, we turn a 60-second job into a loud, difficult, and high-risk ordeal. This isn't just a deterrent; it's a clear message to criminals that your truck is fortified by the best in the industry, forcing them to find an easier, unprotected target.
Industry Recognized: SEMA Award-Winning Design & Engineering
How can you ensure the best cat shield fit for a 2019+ GMC Sierra? By using a product designed from a 3D scan of its exact frame. Our process guarantees a perfect, rattle-free fit that provides maximum coverage without interfering with chassis components.
A solid plate can trap excessive heat, risking damage to your transmission and sensors. We integrate specially designed louvers that promote airflow, allowing your vehicle's sensitive components to cool as intended by the manufacturer.
The replacement cost for four catalytic converters, plus potential O2 sensor and exhaust damage, can be astronomical. The MillerCat shield is a one-time investment that saves you from these massive expenses and the severe headache of dealing with theft.
| Vehicle Fitment | 2019+ GMC Sierra 1500 |
| 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 to be compatible with all major engine options for the 2019+ Sierra 1500, including the 5.3L V8 and 6.2L V8. The mounting points on the frame are consistent across these models.
In most cases, yes. Our shield mounts to the factory frame, so as long as your lift kit does not modify or obstruct these specific mounting locations, it will be compatible. It is not compatible with drop bracket style lift kits that alter crossmember locations.
Yes. The shield is securely bolted to the frame and does not have any protruding parts that would interfere with undercarriage sprayers or get caught in most automatic car wash systems. It is perfectly safe.
No. The shield is designed to protect the catalytic converters, which are located further back. It does not obstruct access to the engine oil drain plug, oil filter, or transmission pan, so all routine maintenance can be performed normally.
While the shield offers significant protection against road debris, its primary design and material thickness are optimized for theft deterrence. It is not intended to be a dedicated off-road skid plate for supporting the full weight of the vehicle or absorbing severe rock impacts.
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
