5GRGN23U43H136288

The 2003 HUMMER H2 is a robust Sport Utility Vehicle (SUV) manufactured by GENERAL MOTORS LLC, with a powerful 6.0-liter V8 engine, known for its off-road capabilities thanks to its 4WD system. Built in Mishawaka, Indiana, this vehicle is designed for heavy-duty performance with a gross weight rating of up to 9,000 pounds. Its combination of a V-shaped engine configuration and 4x4 drive type makes it a versatile choice for both on-road and rugged terrain adventures.

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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