5GRGN23U43H141751

The 2003 HUMMER H2 is a robust SUV known for its powerful 6.0-liter V8 engine, produced by GM. This 4WD vehicle is designed for versatility and off-road capability, making it a popular choice among those needing both performance and durability. Built in Mishawaka, Indiana by AM General, the H2 is part of the 3/4 Ton series and offers a classic, rugged style. With its gasoline-fueled engine and spacious four-door design, it comfortably caters to adventurous drivers and families alike.

Decoded VIN:

Make

HUMMER

Manufacturer Name

GENERAL MOTORS LLC

Model

Model Year

2003

Plant City

MISHAWAKA

Series

3/4 Ton

Vehicle Type

MULTIPURPOSE PASSENGER VEHICLE (MPV)

Plant Country

UNITED STATES (USA)

Plant Company Name

AM General

Plant State

INDIANA

Body Class

Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)

Doors

Gross Vehicle Weight Rating From

Class 2G: 8,001 - 9,000 lb (3,629 - 4,082 kg)

Drive Type

4WD/4-Wheel Drive/4x4

Engine Number of Cylinders

Displacement (CC)

6000

Displacement (CI)

366.1424645683

Displacement (L)

Engine Model

LQ4

Fuel Type - Primary

Gasoline

Engine Configuration

V-Shaped

Engine Manufacturer

Most common problems:

Oil consumption

The LQ4 engine in the 2003 Hummer H2 is known to have higher oil consumption, which can be due to worn piston rings or valve seals.

Intake manifold gasket failures

The intake manifold gaskets can deteriorate over time, causing vacuum leaks and poor performance.

Knocking or pinging noise

This issue could be due to carbon buildup in the combustion chambers or using low-quality fuel.

Fuel injector issues

Clogged or malfunctioning fuel injectors can cause rough idling and reduced engine performance.

Cooling system problems

The cooling system, including the radiator and water pump, can fail, leading to overheating issues.

Camshaft position sensor failure

This can lead to engine stalling, poor acceleration, and difficulty starting the engine.

Throttle body issues

Throttle body problems can cause uneven idling and poor throttle response.

Exhaust manifold cracks

The exhaust manifold can develop cracks over time, leading to exhaust leaks and increased engine noise.

Timing chain wear

Over time, the timing chain can stretch or wear, leading to poor engine timing and performance issues.

Mass air flow sensor problems

A failing MAF sensor can cause poor fuel economy, rough idling, and engine hesitation.

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