1GCHK23103F173970

The 2003 Chevrolet Silverado 2500 is a robust 4WD pickup powered by a 6.6L V8 diesel engine from Isuzu, featuring a turbo for extra performance. This crew cab truck, built in Flint, Michigan by GM Truck Group, is classified in the 3/4 ton series with a gross vehicle weight rating between 9,001 and 10,000 lbs. Ideal for heavy-duty tasks, it combines power and durability.

Decoded VIN:

Make

CHEVROLET

Manufacturer Name

GENERAL MOTORS LLC

Model

Silverado

Model Year

2003

Plant City

FLINT

Series

2500 (3/4 Ton)

Vehicle Type

TRUCK

Plant Country

UNITED STATES (USA)

Plant Company Name

GM Truck Group

Plant State

MICHIGAN

Body Class

Pickup

Doors

Gross Vehicle Weight Rating From

Class 2H: 9,001 - 10,000 lb (4,082 - 4,536 kg)

Cab Type

Crew/Super Crew/Crew Max

Drive Type

4WD/4-Wheel Drive/4x4

Engine Number of Cylinders

Displacement (CC)

6600.0

Displacement (CI)

402.75671102523

Displacement (L)

6.6

Engine Model

LB7

Fuel Type - Primary

Diesel

Engine Configuration

V-Shaped

Turbo

Yes

Engine Manufacturer

Isuzu

Most common problems:

Injector failure

The LB7 engine is known for issues with its fuel injectors, which can fail and cause poor performance, rough idling, and excessive smoke.

Head gasket problems

Due to the high compression of diesel engines, the head gaskets can fail, leading to coolant leaks, overheating, and loss of engine power.

Overheating

The cooling system in the 2003 Silverado with the LB7 engine can sometimes fail, leading to overheating issues, especially under heavy loads.

Glow plug failure

The LB7 engine in the Silverado can experience glow plug failures, which can cause hard starting, especially in cold weather.

Turbocharger issues

The turbocharger can suffer from wear and tear, leading to reduced power output and potential turbo failure.

Fuel filter clogging

The fuel filters can become clogged, leading to poor fuel delivery and reduced engine performance.

Injector wiring harness issues

The wiring harness for the injectors can become damaged, causing electrical problems that affect injector performance.

Crankshaft position sensor failure

This sensor can fail, leading to stalling issues and difficulty starting the engine.

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