How Much Does an L5P Delete Kit Cost?

What Does a Complete L5P Delete Setup Cost?

The GM/Chevy Duramax 6.6 L5P Full Delete Bundle is priced from $4,634.00 to $5,683.00. In the bundle you get a tuning unlock tool, delete tuning with Shift on the Fly, CAN plugs, your choice of a DPF/CAT delete pipe or a 5" full stainless exhaust, and a full EGR delete kit.^[1] The bundle fits the L5P from 2017 through 2023.

That's the short answer. Let's break it down, because a price only means something once you know what lands on your shop floor and what each piece of it actually does for the build.

The price range, up front

Here's the thing — you came for a number, so the number went first. Treat the range as the real answer and set your budget against the top end of it. Nobody ever got hurt by money left over.

You already know the engine under the hood. The L5P is a 6.6L V-8 turbo-diesel.^[2] It's a workhorse, and everything below is about setting one up right the first time.

What arrives in the bundle

Think of the bundle as the whole job in one crate, instead of a parts list you piece together across a handful of carts and a stack of tracking numbers. The GM/Chevy Duramax 6.6 L5P Full Delete Bundle permanently upgrades your 2017-2023 L5P to run without the factory emissions system.^[1]

The hardware and the software both deserve a closer look. The GM/Chevy Duramax 6.6 L5P Full Delete Bundle includes a Full EGR Delete Kit. It also includes Delete Tunes for L5P.

Keep that pairing in mind. The EGR section further down shows exactly why they belong together.

Which trucks the bundle covers

Fitment comes before price, before options, before anything else. Pull up your VIN and confirm the model year before you compare a single number. It's quick, and it saves you a return headache.

Not sure what you're working with? Ask before you commit. A question costs nothing, and a wrong part can cost you a whole weekend.

Budgeting beyond the box

The box price is the big number, but it isn't the only one. Before you commit, list everything else the job touches: the computer you'll load the tune from, a clean place to work, and the shop time if you're not turning the wrenches yourself.

If a shop is doing the install, get the labor quote in writing before a single part arrives. Write it all down in one place. Surprises are for birthdays, not invoices.

Is the Bundle Cheaper Than Buying the Parts One at a Time?

The Duramax L5P 2017-2023 DELETE SOFTWARE is priced from $1,799.00 to $2,199.00. The L5P EGR Delete costs $349.00. The GM/CHEVY L5P - CAN BUS Plug Kit costs $119.00. One thing to know: if you already bought a full delete kit from The Diesel Dudes, these plugs are included in that bundle — this kit is sold separately for owners who just need the plugs on their own.^[3]

Fair question, and we get it. Nobody wants to pay twice for the same part. Here's every price side by side, so you can see the whole picture at once.

The standalone prices

Resist the urge to add those rows up. A total on its own tells you very little, because the real question is what your truck still needs. Answer that first and the right row picks itself.

Standalone parts make the most sense when your truck is already partway there. Maybe the tune went on last season. Maybe the hardware is sitting on the shelf waiting for its turn.

What the separate parts leave out

Be straight with yourself here. Set the bundle's contents next to the parts you'd pick up one at a time, and tick them off line by line, because whatever's left unticked is still on you to source, pay for and wait on.

If the truck still needs nearly everything on that list, doing it all in one go is the easier path to take; if a good chunk of it is already bolted on, the standalone parts let you finish the job without paying for work that's done. That's a few minutes with a pen. It beats any total you could add up in your head.

Avoiding a second set of plugs

The double-buy is the classic mistake here. Ordering plugs you already own is like buying a spare for your spare. If a full delete kit is already sitting in your garage, re-read that note up top before you add anything else to the list.

Already got the plugs? Good. Cross them off and move on.

What Do You Get With the L5P Delete Software?

The Duramax L5P 2017-2023 DELETE SOFTWARE fits the L5P from 2017 through 2023. You get the GM/Duramax L5P software files with Shift on the Fly functionality for pickup models, so you can change your power level right from the steering wheel controls.^[4] Eight tuning credits are required — add them to your order or use credits you already have.^[4]

Let's look closer. It pays to know exactly what you're getting before the files are made.

Shift on the Fly on pickup models

On a pulling truck between hooks, this one's a game-changer. Pay attention to the "pickup models" detail, though. If your truck isn't a pickup, reach out before you assume the feature comes along for the ride.

Tuning credits and what they add to the bill

Credits are the line item people forget. Budget for them from the start, so the software price isn't the only number you planned around.

Already have credits from an earlier tune? Check the balance before you add more. There's no sense paying for what's already sitting in your account, and asking about it alongside your other questions means you won't get caught short.

Why to ask questions before you buy

Measure twice, cut once applies to software too. This software is built to order and not eligible for refunds, so reach out before buying if you have questions.^[4] Get the tune your L5P deserves.^[4]

Write your questions down as they come up. A short conversation now beats a long wait on a file that isn't what you wanted.

What to check before the form goes back

Confirm the year and model on your truck, and whether it's a pickup, before you send anything back. A little checking now beats a lot of back-and-forth later. Nobody has patience for that between events.

What Do You Get With the L5P EGR Delete?

Meet the EGR Delete. This is compatible with all 2017–2023 Chevrolet Silverado and GMC Sierra Duramax pickup models.^[5] The kit physically blocks off the EGR circuit and includes all the hardware and gaskets, so there's nothing to source separately.^[5] You'll also need a compatible delete tune to update your ECM — the hardware alone won't keep check engine codes away, since the computer still expects the EGR to be working.^[5]

What comes in the box

That's exactly what you want on install day. Open the box, lay every piece out on a clean bench, and check it against your instructions before a single bolt comes off the engine.

If anything looks off, sort it out before the old parts come off, because a truck sitting half-apart in the shop while you wait on an answer is nobody's idea of a good weekend. Snap a few photos of the factory setup while you're at it. They cost nothing, and they settle every "where did this go" argument later.

Why the kit needs a tune

A lot of guys assume the hardware is the whole job. It isn't. Doing the hardware without the tune is like changing the locks and never telling the alarm company.

So plan the tune and the hardware as one job, even if they show up in separate boxes. If the tune is already on the truck, the kit is the piece that's left. The order you do them in is a question for your instructions, not a guess.

What the EGR does to the intake side

Here's what's going on under the hood while the engine runs. Every cycle, the EGR pushes hot, dirty exhaust into a clean intake manifold, laying down soot on the valves and manifold walls.^[5] Deleting the EGR stops that cycle cold and lets the engine run clean.^[5]

That's the whole pitch in one line. It's a good one.

Pitfalls that cost people money

The mistakes that cost money on a job like this tend to be small ones. Bolts land in the wrong pile, a gasket gets reused out of habit, or the instructions get skimmed when they should have been read.

Read the instructions end to end before you start, not one step at a time as you go. Bag and label every fastener as it comes out. Keep the old parts until the truck is back together and running right.

Why Does an L5P Delete Need the CAN Bus Plug Kit?

The GM/CHEVY L5P - CAN BUS Plug Kit fits Silverado and Sierra HD trucks with the L5P from 2017 through 2023. These plugs go in place of the NOx and DEF module connectors and provide a closed signal back to the ECM so it reads correctly after the delete.^[3] They're made for use with aftermarket exhaust systems or delete pipes and are required for delete tuning on the L5P.^[3]

Where the plugs go

Fitment covers 2017, 2018, 2019, 2020, 2021, 2022, and 2023 Silverado and Sierra 2500/3500HD trucks with the L5P Duramax.^[3] Think of the plugs as a stand-in that keeps answering the phone after the original part has moved out. Easy to overlook, hard to skip.

Before you unplug anything, put a strip of tape on each factory connector and label it. It turns a guessing game into a matching game.

Why the tune depends on them

This is the step people skip. It's also the one that comes back to bite them. Treat the plugs, the tune and the exhaust work as one package, and install day goes a lot smoother.

Doing the job in stages? Keep the plugs with the exhaust parts so they go in during the same session.

Who to call about placement

Not sure which connector gets which plug? Call (888) 830-2588 or email sales@thedieseldudes.com and the team will walk you through it.^[3] A quick call beats guessing with a connector in your hand.

Check your work before the first start

Before you fire it up, go back over every connector you touched. Each one should be seated, clipped and labeled the way you planned it.

Then start it, let it settle, and scan for codes. If something pops up, don't panic: note the code, retrace your steps and check the connector you touched last.

What Happens After You Order an L5P Delete?

The GM/Chevy Duramax 6.6 L5P Full Delete Bundle covers the L5P from 2017 through 2023. A Windows 7 or newer PC is required for tune installation, since Mac and Linux aren't compatible, and instructions are emailed after purchase.^[1] The Duramax L5P 2017-2023 DELETE SOFTWARE covers the L5P from 2017 through 2023. Your custom tune files arrive within 3–5 business days of an accurate submission.^[4]

The good news? None of this is hard. It just rewards the owner who gets the details right the first time.

The vehicle information form

If you went the full-kit route, here's your first step. After purchase you'll get a vehicle info form to complete before we ship.^[1]

Going software-only? After you order, we email a vehicle information form to collect your VIN, year/make/model, and ECM serial number.^[4] Have those details written down before the email even lands.

Keep an eye on your inbox, too. All delete kit instructions will be sent to you via email post purchase.

How long the tune files take

Double-check every digit before you hit send. A typo on the form is the easiest delay in the world to avoid.

Need the truck ready for a specific event? Work backward from that date and send the form early. Use the wait well, too: get the parts staged, the bench cleared and the truck parked where you can work all the way around it.

The computer you load the tune from

On the software-only path, check the laptop you plan to use before the files show up. A Windows 10 or newer PC is required to load them; Mac and Linux are not compatible.^[4] If yours doesn't make the cut, line up one that does now, not on install day.

What to have ready on install day

Lay it all out the night before. You want the parts, the instructions, the laptop and its charger, and a clear spot to work with good light.

Charge the laptop fully and close everything else on it before you start. A second set of hands never hurts, and neither does a cold drink for whoever is holding the flashlight.

Which L5P Delete Purchase Fits Your Truck?

For a 2017-2023 L5P that needs the tune, CAN plugs, exhaust and EGR kit in one order, the GM/Chevy Duramax 6.6 L5P Full Delete Bundle is the pick. For a 2017-2023 L5P that only needs the tune, the Duramax L5P 2017-2023 DELETE SOFTWARE is the standalone option. For a truck that already runs a delete tune, the L5P EGR Delete is the standalone EGR option.

What stops once the tune is in

Here's what the money gets you in the cab. Once the delete tune is in, the emission-related codes stop, including "See Dealer" codes, check engine lights, "Exhaust system service required" alerts, and limp mode.^[1]

That's the quiet dash you're paying for. It works through custom delete tunes that wipe the emissions system from your truck's computer, which lets you remove the DPF, the DEF tank, the EGR system, and the CAT (including the DOC and NOX) for good.^[1] Between rounds, the last thing you want is the dash stealing your attention.

Which purchase for which owner

So which one are you? Be honest about what's already on the truck, not what's on the wish list.

Starting from stock, the one-order route is the simplest way to get there. Already tuned? The hardware is what's left. Already done the hardware? Then it's the tune.

Piecing it together yourself? Re-read the plug kit section before you build your list. Here's the thing — the path that looks cheapest at first glance isn't always the cheapest once you've paid for the pieces you forgot. Pick the path that matches what's already on your truck, and build it once.

Returns before you order

If you went with the full kit, know its terms before anything ships. On returns: exhaust and delete pipes are final sale, the EGR kit is returnable unused within 30 days with a $30 restocking fee, and the rest of the kit is non-refundable.^[1] So settle the exhaust choice before you fill in that form, not after.

Torn between the delete pipe and the full exhaust? Ask before you decide, not after the box is on its way.