What are the bad years for Duramax?
Table of Contents
Duramax Problems by Year
- LB7: 2001 – 2004. As the original Duramax model, the LB7 is still extremely popular with diesel enthusiasts due to its lack of emissions control parts.
- LBZ: 2006 – 2007.
- LMM: 2007.5 – 2010.
- LML: 2011 – 2016.
- L5P: 2017 To Present.
What are the problems with an LB7 Duramax?
One of the most common LB7 Duramax problems is leaking O-rings on the Fuel Filter Housing. As these trucks continue to get older, the original o-rings can deteriorate over time. They’re also susceptible to normal wear and tear.
What year Duramax has head gasket problems?
These are both relatively common problems you might expect to deal with on the 2001-2004 LB7 Duramax, but you can rest a bit easier knowing the aftermarket has had a decade to develop and perfect the parts you need to correct it. It’s now better than it was from GM.
What year model Duramax is the best?
2016
- #1 Best Year: 2007 Duramax.
- #2 Best Year: 2006 Duramax.
- #3 Best Year: 2020 Duramax.
- #4 Best Year: 2021 Duramax.
- #5 Best Year: 2018 Duramax.
- #6 Best Year: 2019 Duramax.
- #7 Best Year: 2010 Duramax.
How long will a LB7 Duramax last?
The Duramax engine should last up to 300,000 miles before needing major repairs if you are wondering how long it will last. The number of miles an engine can run depends on how well it was maintained and driven over its lifetime.
What are some of the most common problems with the Duramax?
9 Common 6.6L LB7 Duramax Problems. 1 1. LB7 Duramax Injectors. The most notorious LB7 Duramax problem is their original injectors. Even GM acknowledged their problems when they corrected 2 2. Lack Of A Fuel Lift Pump. 3 3. Fuel Filter Housing O-Ring Leaks. 4 4. Water Pump Failures. 5 5. Overheating.
What causes a Duramax to overheat?
Overheating can sometimes be attributed to head gasket failure, as the LB7 Duramax does suffer from a small radiator, fan, and problematic water pumps. Head gasket failure can also be attributed to performance modifications like tuning that allow the head bolts to stretch and a lifted cylinder head.
Do Duramax engines have a lot of head gasket problems?
The LB7 Duramax is more prone to head gasket failures than future generations of the Duramax engine. Despite this, head gasket failure usually doesn’t occur until over 100,000 miles, so it’s not nearly as common as it is in 6.0L Powerstroke engines.
When did the Chevy Duramax diesel engine come out?
The LB7 Duramax engine made its debut on Chevrolet and GMC HD trucks in 2001. These diesel engines are where the Duramax started, and they have been so successful that the Duramax are still used in GM HD trucks today.