2025-2026 Duramax L5P/LZ0 Diagnostic Plug
Fits: Duramax L5P (2017-Current 6.6L Duramax)
Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the 2025-2026 Duramax L5P/LZ0 Diagnostic Plug you will earn 160 DIESEL DOLLARS in your SDS Fuel Tank!
The USCAN5D diagnostic plug fits 2025-2026 GM trucks and SUVs with the 6.6L Duramax L5P or the 3.0L Duramax LZ0. It is made in America around an OEM connector and OEM pins, sealed 100%, and carries a lifetime warranty. Owners pick it because it is built from factory connector parts instead of a generic pigtail.
Fitment
Listed for these 2025-2026 GM applications, straight from the maker's fitment list:
- 2025-2026 6.6L DURAMAX L5P: Chevrolet Silverado and GMC Sierra 2500HD-3500HD
- 2025-2026 3.0L DURAMAX LZ0 (Pick Up): Chevrolet Silverado and GMC Sierra 1500
- 2025-2026 3.0L DURAMAX LZ0 (SUV)
The 3.0L LZ0 is the inline-six Duramax, a different engine family from the 6.6L, and this plug is listed for both. It is not listed for 2024 or earlier trucks. For 2024 and some earlier applications, see the 2021-2024 version, part number USCAN4D. Fitment on these plugs is split by model year, so verify fitment by VIN or call the shop before you order.
Why this part
A diagnostic plug is only as good as its connection, and that is where this one is built right. It uses an OEM connector and OEM pins, the same style of parts the factory harness is built from, rather than a generic plug. It is 100% sealed to keep water and dirt out of the connection, it is made in America, and it carries a lifetime warranty.
One part number covers the 6.6L L5P in the heavy-duty pickups and the 3.0L LZ0 in the 1500 pickups and SUVs. If you keep a mix of 2025-2026 GM diesels in the shop or the fleet, one plug covers all of them.
What you get
The maker's feature list for part number USCAN5D:
- Made in America
- Uses OEM Connector
- Uses OEM Pins
- 100% Sealed
- LIFETIME WARRANTY
Frequently asked questions
Will this plug fit my 2024 Silverado HD?
Not this version. The USCAN5D is listed for 2025-2026 applications only. Our 2021-2024 diagnostic plug, part number USCAN4D, is listed for the 2024 6.6L L5P. Send us the VIN if your truck was built near a model-year change.
Does it fit the 3.0L Duramax?
Yes. It is listed for the 2025-2026 3.0L Duramax LZ0 in both the pickup and the SUV, as well as the 6.6L L5P. On the pickup side that means the Silverado and Sierra 1500.
Is the plug sealed?
Yes. The maker lists it as 100% sealed, and it is built on an OEM connector with OEM pins. It is also made in America and backed by a lifetime warranty.
Questions on fitment? Call the shop at the number in the header. We install everything we sell.
Diesel Dollars is Southern Diesel Supply's Loyalty Program. Purchasing with Us Earns you 1 Point for every 1 Dollar spent to use for future buys!
By ordering the 2025-2026 Duramax L5P/LZ0 Diagnostic Plug you will earn 160 DIESEL DOLLARS in your SDS Fuel Tank!