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The 2006 HUMMER H1, manufactured by AM GENERAL LLC in Mishawaka, Indiana, is a robust multipurpose passenger vehicle equipped with a 6.6L GM-Isuzu diesel engine. This 4-door truck features a turbocharged 8-cylinder engine delivering over 300 hp, paired with a 5-speed automatic transmission. It falls within the Class 3 weight category, making it a powerful and versatile vehicle perfect for heavy-duty use.

Decoded VIN:

Make

HUMMER

Manufacturer Name

AM GENERAL LLC

Model

Model Year

2006

Plant City

MISHAWAKA

Series

1 1/4 ton HMCS

Vehicle Type

MULTIPURPOSE PASSENGER VEHICLE (MPV)

Plant Country

UNITED STATES (USA)

Plant State

INDIANA

Body Class

Truck

Doors

Gross Vehicle Weight Rating From

Class 3: 10,001 - 14,000 lb (4,536 - 6,350 kg)

Steering Location

Left-Hand Drive (LHD)

Transmission Style

Automatic

Transmission Speeds

Engine Number of Cylinders

Displacement (CC)

6600.0

Displacement (CI)

402.75671102523

Displacement (L)

6.6

Fuel Type - Primary

Diesel

Engine Brake (hp) From

300

Turbo

Yes

Engine Manufacturer

GM-Isuzu

Most common problems:

Oil leaks

The 2006 Hummer H1 with a GM-Isuzu 8-cylinder engine is prone to oil leaks, which can be caused by worn-out gaskets or seals.

Overheating

This vehicle can experience overheating issues due to a malfunctioning thermostat, radiator problems, or issues with the cooling fan.

Fuel injector problems

The fuel injectors may become clogged or fail, leading to poor engine performance and reduced fuel efficiency.

Timing belt/chain issues

If the timing belt or chain is not maintained properly, it can lead to engine misfires or even severe engine damage.

Turbocharger failure

If the Hummer H1 is equipped with a turbocharger, it may experience issues such as poor acceleration or excessive smoke due to turbocharger failure.

Electrical problems

Issues with the engine’s electrical components, such as the alternator or battery, can lead to starting problems or erratic engine behavior.

Exhaust manifold cracks

The exhaust manifold can develop cracks, leading to exhaust leaks and potentially reduced engine performance.

Fuel pump failure

Problems with the fuel pump can cause starting issues and poor engine performance, as the engine may not be getting enough fuel.

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