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Recommended Baseplate for a 2026 GMC Sierra 1500 w/a 3.0 Diesel Engine  

Updated 11/10/2025 | Published 11/05/2025

Question:

Does this Curt baseplate work with 2026 GMC 1500 with 3.0 diesel?

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Expert Reply:

It sure does Bob and congrats on the new truck. The Curt Custom Base Plate Kit item # C66JR will indeed fit the 2026 GMC Sierra 1500 with a 3.0 diesel engine. The only models it doesn't fit for that year are the AT4X models with the AEV bumper.

Here are the rest of the parts you will need to flat tow your 2026 GMC Sierra 1500:

Tow Bar and Safety Chains - etrailer XHD Non-Binding Tow Bar for Blue Ox and Curt Base Plates item # e67ZR

Wiring Harness - Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - item # RM-15267

Battery Disconnect - Roadmaster Battery Disconnect for Towed Vehicle item # RM93MR for a diesel engine

Supplemental Braking System - Curt RVi Series Shadow 2 Flat Tow Brake System item # RVI94FR for a permanent install or the Curt RVi Series 4 Portable Flat Tow Brake System item # RVI44FR for a portable system.

High Low Adapter - The tow bar needs to be within 3" of level. If you measure the height of the inside top of the hitch receiver tube on your RV, and the height difference is more than 3 inches above/below the base plate tab height, you'll need a high/low adapter. I have linked a FAQ article that explains all this in more detail along with our selection of adapters.

What kind of motorhome do you have?

You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.

expert reply by:
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Jerred H
Curt Custom Base Plate Kit
Curt Custom Base Plate Kit
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Bob profile picture

Bob

11/10/2025

The reason for looking at Curt was I did not want to disssemble the front of truck. I have the battery disconnect fm last truck along with chains and tow bar, think air force one since my Entegra has the air on rear bumper. I saw the wireless lights on ur site so that should do it, tell me Install Curt I do not need to dissemble the the front end?

Jerred H. profile picture
Etrailer Expert

Jerred H.

11/10/2025

@Bob The Curt Custom Base Plate Kit item # C66JR does not require dissembling the front end of your Sierra 1500. The Demco LED Tow Light Bar for Towed Vehicles w/ Wireless Transmitter item # DM36MV would work great with your setup. We also have the Towed Vehicle Reinstall Kit for Demco Air Force One Flat Tow Brake System item # SM99226 if you need replacement fittings and lines. What battery disconnect do you currently have? The Roadmaster item # RM93MR is designed specifically for diesel engine trucks.

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