So new but not so new

[carjcapt]

I'm Jim Smith a ex owner of a 2002 Chevy 2500HD with Durmax for 21 years, great truck but sadly didn't need the HD anymore so it is gone. In its place we bought 23 Chevy 1500 ZR2 with the LZ0 engine, outstanding truck engine combo. Then a year ago bought a GMC Yukon Denali with the LM2 and 69000 miles. Again great combo. Was a member of the Durmax forum for the 6.6 and found great information to help with ownership. I'm looking forward to sharing and finding info about our baby maxes.

 

[gemarsh]

Welcome.

 

[BoostN]

Welcome! My last HD was a 2011 Duramax, loved that truck. As time went on I needed something easier on the fuel and easier to park in the city, so the half ton duramax fit my needs perfect.

My wife has a 2022 Tahoe that we purchased during covid, but the Duramax was on my wish list for that as well, but it didn't work out as you couldn't get one during that time.

 

[rickshaw]

I've been a diesel owner since my first, a '78 chevy 5.7 then '82 Buick 5.7, '01 & '08 Duramax , '08 Cummins, & 2 '011 6.7 power strokes. No major issues at all. Now I have a 2026 Sierra 3.0 Duramax & am hoping my experience will be the same. Over 7000 miles & no problems. Hopefully I have one of the good ones. Can't find info on build dates on the thrust bearing problem. I would appreciate info from anyone on this matter.

 

[gemarsh]

Welcome.

Here is a copy and paste from a diesel dudes page...

​

Which Trucks Are Affected by This Defect?​

The thrust bearing issue affects 2025-2026 Chevrolet Silverado, GMC Sierra, Tahoe, Suburban, and Yukon models equipped with the 3.0L Duramax LZ0 diesel engine. However, not all engines from this production window exhibit failure — the problem appears limited to a specific subset of early manufacturing runs, though GM hasn't disclosed failure rate percentages or specific VIN ranges. If you're driving a 2025 or 2026 GM truck with the 3.0L Duramax LZ0 (also called the "3-Max" in the community), you're in the affected model year range. That includes:

• 2025-2026 Chevrolet Silverado 1500
• 2025-2026 GMC Sierra 1500
• 2025-2026 Chevrolet Tahoe
• 2025-2026 Chevrolet Suburban
• 2025-2026 GMC Yukon

But here's where it gets complicated — not all 2025-2026 LZ0 engines are failing. Some owners report zero issues despite identical model years. This suggests the problem's limited to a specific production batch or subset of early manufacturing runs.

Why No Official Recall?​

As of early 2026, GM hasn't issued a recall. They're "keeping a close eye" on the issue according to GM Authority, but without a recall, you need to experience symptoms before the dealer will act. That's frustrating — if GM knows there's a defect in certain production batches, they should be proactively identifying and fixing affected trucks.
Check your door jamb sticker for the build date. If your truck was built in the early 2025 production window and you're approaching 5,000-10,000 miles, stay vigilant. Listen for bellhousing noise. Watch for check engine lights. Don't ignore early warning signs.

Production Batch Theory​

The fact that failures are inconsistent across the model year suggests a batch of defective crankshafts or bearings made it through quality control during a specific production window. GM hasn't disclosed which assembly plant or supplier is involved, but the pattern's clear — some engines got bad parts, others didn't.
Until GM releases comprehensive VIN ranges or build date specifics, every 2025-2026 LZ0 owner needs to stay aware. You might have a perfectly good engine. Or you might be driving a ticking time bomb. The only way to know is monitoring for symptoms and getting that end play checked if you're concerned.