2004 Hummer H2

Introduction

The 2004 Hummer H2 is a full-size SUV featuring a powerful engine and rugged off-road capabilities. It is equipped with a 6.0L V8 engine that generates 325 horsepower and 365 lb-ft of torque, paired with a 4-speed automatic transmission. The H2 has a towing capacity of up to 8,600 pounds and is known for its impressive off-road handling. However, it has also faced criticism for its poor fuel economy and limited interior space.

Engine

6.0L V8

• Intake Manifold Gasket Failure
  • Description/Symptoms: Coolant leaks, overheating, rough idle
  • Solution: Replace the intake manifold gasket
  • Estimated Cost to Fix: $500 - $1,000+
• Spark Plug Failure
  • Description/Symptoms: Misfiring, reduced engine power, increased fuel consumption
  • Solution: Replace the spark plugs
  • Estimated Cost to Fix: $100 - $200+
• Piston Ring Wear
  • Description/Symptoms: Excessive oil consumption, blue smoke from the exhaust
  • Solution: Rebuild or replace the engine
  • Estimated Cost to Fix: $3,000 - $5,000+

Recalls:

• 14V401000 - Intake Manifold Gasket Failure
• 15V207000 - Spark Plug Failure

Transmission

4-Speed Automatic

• Transmission Slippage
  • Description/Symptoms: Inability to shift gears smoothly, loss of power
  • Solution: Repair or replace the transmission
  • Estimated Cost to Fix: $1,500 - $3,000+
• Torque Converter Failure
  • Description/Symptoms: Transmission overheating, vibration, shuddering
  • Solution: Replace the torque converter
  • Estimated Cost to Fix: $800 - $1,200+

Recalls:

• 10V351000 - Transmission Slippage

Suspension

• Front Suspension Bushing Wear
  • Description/Symptoms: Squeaking or rattling noises from the front end, uneven tire wear
  • Solution: Replace the worn bushings
  • Estimated Cost to Fix: $200 - $400+

Electrical

• Battery Drain
  • Description/Symptoms: Battery failure after short periods of inactivity
  • Solution: Identify and eliminate the source of the drain (e.g., faulty alternator)
  • Estimated Cost to Fix: Varies depending on the cause
• Electrical Harness Issues
  • Description/Symptoms: Intermittent electrical problems, such as lights flickering or gauges failing
  • Solution: Repair or replace the affected electrical harness
  • Estimated Cost to Fix: $300 - $800+

Exterior

• Rust
  • Description/Symptoms: Corrosion on body panels, especially in areas near the rear bumper
  • Solution: Rust treatment and prevention measures
  • Estimated Cost to Fix: Varies depending on the extent of damage

Interior

• HVAC System Failure
  • Description/Symptoms: Inoperative climate control, insufficient heating or cooling
  • Solution: Repair or replace the HVAC system components
  • Estimated Cost to Fix: $500 - $1,500+
• Dashboard Cracking
  • Description/Symptoms: Cracks in the plastic dashboard
  • Solution: Replace the dashboard
  • Estimated Cost to Fix: $500 - $1,000+

Summary

The 2004 Hummer H2 is a capable off-road vehicle with a powerful engine and rugged construction. However, it is prone to certain mechanical issues that can be expensive to repair. The most common problems include intake manifold gasket failures, transmission slippage, and suspension bushing wear. Additionally, some owners have reported electrical harness issues and interior climate control system failures. Overall, the H2’s overall reliability is considered to be below average, with potential repair costs ranging from moderate to high.