The Diesel Page Forums

2020 - TDP's 24th Anniversary
What's New | Feature Articles | Product Reviews | Member's Area | Free Forum Registration
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | The Diesel Page - Publications

Go Back Forums > 2001-2019 Chevrolet & GMC 2500HD/3500 Light Trucks > Duramax 6600

Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

Thread Tools Display Modes
Old 09-20-2019, 10:22 AM
More Power's Avatar
More Power More Power is offline
Join Date: Feb 2000
Location: Montana
Posts: 10,638
Arrow 772,470 Miles!

Here are a couple images of a local truck I saw recently here in Montana.

The owner said he bought the 2002 GMC 2500HD in 2014 with 135,000 miles on the odometer. The mileage you see now was accumulated as a consequence of delivering RV travel trailers for dealers all across the US and Canada.

I asked him about maintenance... The truck is running on its second set of injectors. He attributes the injector life to a FASS system (2-micron filter plus lift pump). The truck is running on its 4th water pump and original head gaskets. He also equipped the engine with an Amsoil oil-bypass filtration system, but runs with conventional petroleum 15W-40 diesel rated motor oil. Oil is changed about every 7-10k. The original Allison is serviced at 50K intervals, and it has never been a problem. He also said the truck is on its 4th set of front hub bearing assemblies.

The owner is using a BullyDog system, more as a monitor, but is running a mild towing program.

It still sounds smooth and doesn't smoke.

Attached Images
Attached Images
File Type: jpg 772k-GMC-001.jpg (84.4 KB, 40 views)
File Type: jpg 772k-GMC-002.jpg (65.4 KB, 36 views)
Reply With Quote
Old 09-20-2019, 11:27 AM
rapidoxidationman rapidoxidationman is offline
Join Date: Dec 2002
Location: Teton Valley, Idaho
Posts: 1,902

That's encouraging. Not bad on 2 sets of injectors.
I'm at 260k miles now and will be changing out the weepy water pump tomorrow. Had a couple of hub and cv axle changes on each side. Gonna need an exhaust system soon.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -7. The time now is 09:23 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1996-2020 by - All Rights Reserved