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DemonWorks - 3.0 Duramax Diesel LM2 LZ0
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DemonWorks is built for 3.0 Duramax owners who want more than vague answers and guesswork. Founded by a GM technician and owner, DemonWorks delivers step-by-step maintenance guides, honest product reviews, deep-dive troubleshooting, and real-world testing.

Our mission is simple: helping 3.0 Duramax owners maintain, troubleshoot, and upgrade their trucks with real GM tech expertise — so they can extend the life of their Duramax.

This is why we say: DemonWorks — Diesel Tech, Beyond the Manual.

DemonWorks LLC.


2024 Silverado 3.0 Duramax ZR2

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5:52

3.0 Duramax Gets 3 NEW ACDELCO Oil FIlters ! PF66 PF66A PF66B PF66C

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 week ago

5.6K views

6:17

Here's How To Catch Bad Ball Joints Before They Snap

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 week ago

5K views

6:02

This Tiny Mistake Will Ruin Your 3.0 Duramax Diesel (LM2 vs LZ0 Glow Plugs)

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

4.7K views

6:29

New Garage, Bigger Plans… And This Travoca Cooler Saved My Move

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

1.8K views

3:42

GM's 3.0 Duramax DEF Fix Just Dropped (Here's What You Need to Know)

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

15K views

7:34

3.0 Duramax Oil Pan Drain + Capacity Test: New Design vs Old

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

4.5K views

4:14

3.0 Duramax Oil Pan Drainage Test: New Design vs Old - See The Difference

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

0 views

5:25

GM's New 3.0 Duramax Oil Pan Design Solves a Big Problem

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

10K views

10:00

DIY 3.0 / 6.6 Duramax Fuel Filter Change

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

7.7K views

3:48

The Problem With Budget 3.0 Duramax Resonator Delete Pipe

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

5.9K views

3:11

DemonWorks Behind The Scenes - January 2026 Members Only Video

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 month ago

0 views

6:57

BIGGER ISSUE THAN I THOUGHT How to Spot FAKE PPE Oil Filters Amazon + Ebay

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 3 months ago

5.9K views

10:33

HANDS ON w/ NEW for 2026 Kingbolen S608 Scan Tool - 3.0 Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 3 months ago

1.9K views

5:58

MOBIL 1 ESP 0w30 vs 0w20 - 3.0 Duramax Oil Analysis

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 3 months ago

19K views

10:40

FAKE Oil Filter WILL DESTROY YOUR 3.0 Duramax Engine

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 3 months ago

8.6K views

3:19

Thank You Members - Behind The Scenes - PPE Knock Off / AFE Intake ...

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 3 months ago

0 views

6:13

Blow By From YOUR 3.0 Duramax Diesel ? This Explains it ALL

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

19K views

8:39

This Is How Fuel Really Flows Through the 3.0 Duramax

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

6.4K views

11:00

This Is BAD! DEF in FUEL - CRITICAL Steps To Save $$$

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

8K views

4:46

LZ0 Duramax Engines Are Still Failing — Check This Before It’s Too Late

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

25K views

8:21

Is the Edge EZX Worth It on the 3.0 Duramax? My Honest Opinion

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

9.6K views

8:26

I Exceeded the Limits of my LZ0 w/ Mods - 3.0 Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

9.9K views

5:49

Thank You Members - Behind The Scenes @ What is In The Works

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 4 months ago

0 views

13:08

Is the Edge EZX Worth It for the 3.0 Duramax? Real Driving Tests & Data

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

16K views

16:15

How To Install EDGE EZX 3.0 Duramax LZ0

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

11K views

8:06

GM Technician Warns: This LZ0 Mod Will Void Your Warranty (Do It Anyway)

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

13K views

2:02

LZ0 Engine Failure Build Dates ?

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

11K views

6:35

The Oil GM Doesn’t Recommend — But Might Be the Best for Your 3.0 Duramax

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

27K views

24:28

GM Quietly Fixed The Towing DEF Warning Issue ?

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

10K views

4:55

COMPOUND TURBOS on 3.0 Duramax Diesel at SEMA 2025

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

10K views

8:52

Did GM Just Fix the 10L80/10L90? Gen-3 Valve Body Explained

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

12K views

6:42

Silverado 1500 Tallest Tire w/o Lift 2024 ZR2

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

7K views

3:55

LZ0 Engines ARE FAILING - The Details - 25-NA-307 3.0 Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 5 months ago

27K views

8:07

RESULTS ARE IN! Safe to run 5w30 in 3.0 Duramax Diesel?

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 6 months ago

24K views

27:20

TESTED: HIGH OUTPUT Derringer on Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 7 months ago

7.8K views

2:27

3.0 Duramax Coolant Valve: GM Just Dropped New Special Coverage (N252508341) LM2

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 7 months ago

10K views

3:08

LZ0 Duramax Owners: GM Announces New Coolant Valve Coverage (N252508340)

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 7 months ago

6K views

2:52

iOS 26 CarPlay Update Has 2 Awesome Surprises + 1 FAIL

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 7 months ago

9.4K views

3:55

How To Fill Def Fluid For Diesel Beginners / New Owners 2025 Duramax

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 7 months ago

29K views

8:11

What makes the New 3.0 Duramax Better? LZ0 VS LM2

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

40K views

1:31:03

TEARDOWN 100K Mile 3.0 Duramax LM2 – Stuck Rings, Leaks, and Timing Chain Issues

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

33K views

6:50

3.0 Duramax Charge Air Cooler Radiator Swap | PPE Install Breakdown

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

7.6K views

2:22

Get Rid of That Gross AC Smell Fast With Frigi Fresh Odor Eliminator

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

7.5K views

11:44

3.0 Duramax Diesel: 10L80 Transmission Service with Filter

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

36K views

2:32

Replace Your Dirty Air Filter with a NEW One on a 3.0 Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

8.7K views

4:14

How To: Transfer case Service - Silverado / Sierra 1500 GM Truck 2019+

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

10K views

8:04

How-To 3.0 Duramax Engine Oil Change + Drain Plug Upgrade

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

32K views

5:56

Musty AC Smell? Silverado Cabin Filter Replacement (2019+)

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 8 months ago

5.2K views

3:10

Banks iDash Pro Update Via App Unlocks New Parameters

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

4.6K views

8:13

10L80 Transmission Bypass Valve MOD - Barbell 10L90

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

14K views

8:41

Don't Let High Temps KILL Your 10L80 Transmission or Valve Body

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

18K views

7:08

HOW TO: 3.0 Duramax DEF INJECTOR #2 Replacement

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

9.2K views

15:41

Don't Waste Time! Fast & EASY Truck Diagnostics with Mucar892BT

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

2.6K views

4:24

Why Does This 3.0 Duramax Repair Cost $10,000+?

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 9 months ago

21K views

10:08

HOW Duramax Fuel Filters Work + Why Quality Is CRITICAL

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 10 months ago

23K views

6:54

I STOPPED USING 0w20 - My Oil Analysis said 5w30 is Safer

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 11 months ago

52K views

5:02

Of all 3.0 Duramax Mods - This is my favorite

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 11 months ago

59K views

4:28

IT'S OFFICIAL 597,000+ Potential Engines Need Replacement

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 11 months ago

14K views

19:36

Pro Level Scan Tool - Kingbolen K10 Elite Review on Silverado Duramax

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 11 months ago

4K views

7:36

Mobile Regen Using Banks idash On 3.0 Duramax Diesel

DemonWorks - 3.0 Duramax Diesel LM2 LZ0

Shared 1 year ago

5.7K views

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