5GTDN13E978158292
2007 HUMMER H3
Vehicle Summary
The 2007 HUMMER H3 is a robust Sport Utility Vehicle (SUV) manufactured by General Motors LLC, featuring a 3.7-liter inline-5 engine with Variable Valve Timing (VVT) and Dual Overhead Cam (DOHC). Designed for versatility and capability, it offers 4-wheel drive (4WD) for enhanced off-road performance. Built in Shreveport, Louisiana, this mid-size 1/2 ton SUV is part of HUMMER's legacy of rugged, multi-purpose passenger vehicles. With a hydraulic brake system and water cooling, the H3 is engineered for both urban and adventurous terrains.
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2007 HUMMER H3
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Complete Specifications
Known Issues for This Vehicle
Brake fluid leaks
Hydraulic brake systems rely on fluid to transfer force; leaks can lead to decreased braking performance.
Brake master cylinder failure
A faulty master cylinder can cause inconsistent brake pressure or complete brake failure.
Brake pad wear
Worn brake pads can reduce braking effectiveness and damage rotors.
Overheating issues
The LLR engine may suffer from overheating due to coolant leaks, radiator issues, or thermostat failure.
Timing chain problems
The DOHC configuration may face timing chain tensioner or guide wear, leading to improper timing.
Valve train noise
VVT systems can experience wear in camshaft actuators, leading to noise and performance issues.
Check engine light
Various sensors (O2, MAF, etc.) and emission control components can trigger the check engine light.
Fuel injector problems
Dirty or failing fuel injectors can cause misfires, poor fuel economy, and rough idle.
Head gasket failure
Common in older engines, resulting in coolant leaks, overheating, and white smoke from the exhaust.
Throttle body issues
Carbon buildup can lead to poor throttle response and stalling.
Ignition coil failure
Can cause misfires and rough engine performance, commonly affecting engines with multiple coils.
Exhaust manifold cracks
Can lead to exhaust leaks, reducing engine performance and causing noise.
