2003 Chevrolet Silverado 2500LT Duramax
“The LB7 + Allison combo is basically a diesel legend.”
Documented Miles
344,000
on the odometer
Reliability Score
87/100
community rating
Est. Total Maintenance
$41,200
lifetime spend
Est. Savings vs. New
$30,800
vs. buying new
Engine
6.6L Duramax LB7 Diesel (V8)
Allison 1000 6-Speed
Drivetrain
4WD
2003 model year
The Duramax LB7 paired with the Allison 1000 transmission is one of the most respected diesel combinations ever put in a pickup. Phil's done two injector sets — the LB7's known weakness — and kept everything else stock.
Owner Stories
In their own words — how they got there, and what kept this vehicle running.
Phil R.
“Two injector sets, two sets of glow plugs, and one water pump in 344k miles. The Allison hasn't been touched. These trucks are the real deal.”
Use the best fuel you can find. Duramax injectors are precision instruments. Cheap, dirty diesel is your enemy.
Own a 2003 Chevrolet Silverado 2500 with high miles?
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