The Duramax L5P CAN BUS Plug Kit is an essential component for 2017–2023 Silverado and Sierra 6.6L L5P diesel trucks running delete tuning. Designed to support DPF and DEF removal, this plug kit ensures proper ECM communication after emissions components are removed, preventing fault signals that can lead to drivability and performance issues.
Features
Designed specifically for 2017–2023 GM 6.6L L5P Duramax diesel trucks
Required for DPF and DEF delete tuning applications
Replaces factory NOx and DEF module connections after removal
Sends a closed CAN BUS signal to the ECM
Supports aftermarket exhaust systems and delete pipes
Plug-and-play design for simplified installation
Built for off-road and competition-use vehicles
Benefits
Prevents ECM errors caused by missing emissions modules
Maintains stable engine operation after DPF/DEF removal
Ensures reliable communication within the CAN BUS system
Supports aggressive tuning and heavily modified diesel setups
Helps avoid performance issues related to faulty sensor signals
Compatibility
Make
Chevrolet
GMC
Model
Silverado 2500HD / 3500HD
Sierra 2500HD / 3500HD
Year Range
2017-2023
2017-2023
Engine
GM 6.6L L5P Duramax Turbo Diesel V8
GM 6.6L L5P Duramax Turbo Diesel V8
Technical Specifications
Application: CAN BUS signal management for delete tuning
Engine Platform: GM Duramax L5P
Function: Closed signal emulator for NOx/DEF modules
Installation Type: Plug-and-play
Intended Use: Off-road / competition only
Installation & Notes
Installs after removal of factory DPF and DEF components
Designed to be used with aftermarket exhaust or delete pipes
Delete tuning is required for proper operation
For off-road and competition use only; not legal for on-road emissions-controlled vehicles
Frequently Asked Questions
Why is this CAN BUS plug kit required for delete tuning?
When DPF and DEF systems are removed, the L5P ECM no longer receives expected signals. This plug kit provides a closed signal to prevent fault codes and performance issues.
Will this work with aftermarket L5P exhaust systems?
Yes, it is designed specifically for trucks running aftermarket exhausts or delete pipes.
Does this kit replace L5P sensors or modules?
L5P plugs replace the electrical connection of the NOx and DEF modules after they are physically removed.
Is tuning required when using this L5P plug kit?
Yes, proper delete tuning is required for correct engine operation.
2017-2023 Chevrolet Silverado / GMC Sierra 2500/3500 6.6L
Shipping Policy at Tuner Depot
At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're committed to
ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.
Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you
with a quick and efficient processing time. However, unforeseen circumstances beyond our control may
occasionally impact shipping times.
Factors Affecting Shipping:
Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect
delivery timelines. We will make every effort to minimize any delays.
Holiday Periods: Please note that our shipping center will be closed during holidays. We
will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but
rest assured, we will keep you informed every step of the way.
Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels,
possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high
standards of service.
We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we
will utilize every resource available to deliver your performance parts promptly.
Items Eligible for Return
These items can be returned within 30 days of the purchase date, provided they are unopened, unused, and in
their original packaging:
Tuning devices – for example, an unopened/unused Mini Maxx V1/V2 or blank EFI Live Device
Cables and device accessories – for example, an unopened/unused switch, bypass cable, universal pyrometer
& docking station
Final Sale / Non-Refundable Items
The following items are final sale and cannot be returned:
Custom tuning – including additional tune files purchased separately or custom tuning purchased with a
device
Exhausts and race pipes – this also includes downpipes purchased separately from an exhaust or race pipe
EGR kits
Manufacturer Warranty
All items we sell include a 90-day manufacturer warranty.
If an item is being returned due to a manufacturer defect, it may be returned for a full refund, exchange, or
replacement with a similar item of equal or lesser value.
For eligible items being returned for any other reason, the same options apply: full refund, exchange, or
replacement with a similar item of equal or lesser value, provided the item meets the return requirements
above.
Return Process
All returns must be approved by our team before being sent back. We will provide a valid RMA number and
prepaid return label for the return.
Please do not send any items back without an approved RMA and the return label provided by us, as returns
sent without these will not be accepted or processed.
Off-Road Use Only
These products are intended for off-road, race, and competition use only and may not be legal for use on
public highways where emissions laws apply. Check your local and state regulations before purchase.
Customer Reviews
Overall rating: 4.6 / 5 from 193 reviews.
Exhaust was too short, customer service eventually just quit responding after sending picture after picture of it being too short. The exhaust rubs on the transmission hanger bracket so I had to remove and cut that down. I would not buy this kit unless you want to spend extra time modifying it.
Tuner depot was very helpful I thought I screwed up on the tune part and flashing the ecm but there customer service told me I didn’t mess it up and helped me through it but one thing for sure is nothing to do with tuner depot but no one every tells you on a first time doing one of these trucks the amount of hours it takes it took me almost 30 hours which if I had the right tools and confidence I could of probably cut it down to about 20 but kit works great it’s got awesome power now and I’ll be doing the down pipe very soon to I highly recommend just buying it and getting it over with because the truck is still very quiet almost like it’s a notch above stock
Just got them installed on my truck yesterday and cannot believe the increase in performance! Can’t wait to take it on a road trip already see more power increase and fuel mileage. Unbelievable would do it again tomorrow!
I purchased the efi live sotf tunes along with Dpf delete kit, dpf was good quality, tuner worked with me and not only sent my autocal loaded with a sotf tune but also sent me a few single tunes to use until I installed the switch, the only negative was that 130hp was the max power tune single or switch on the fly, but over all I was pretty happy and service was very good throughout.
Delete kit was as it should be, only thing I’d say is the hardware is cheap and should come with bolts that can withstand heat so if a person ever had to remove them they won’t break. Also they don’t volunteer install directions which are super nice to have if you’ve never done one of these. I had to ask several times for the delete, ez lynk, and cam buss plug directions.