2008 Hummer H2

The 2008 Hummer H2 is a large, imposing SUV known for its off-road capabilities and distinctive styling. It appeals to those who want a rugged and capable vehicle with a bold presence. However, its large size and poor fuel economy are often cited as drawbacks. The 2008 H2 is equipped with a single engine option, a 6.2L V8 producing 393 horsepower and 415 lb-ft of torque, paired with a 4L65-E four-speed automatic transmission.

Engine

6.2L V8

• Oil Pressure Sensor Failure
  • Description/Symptoms: Low or fluctuating oil pressure readings on the dashboard gauge. This can be a false reading due to a faulty sensor, but should still be investigated to rule out actual low oil pressure.
  • Solution: Replacement of the oil pressure sensor.
  • Estimated Cost to Fix: $50 - $150
  • Recalls: None Found
• Knock Sensor Failure
  • Description/Symptoms: Check engine light, poor engine performance, reduced fuel economy, and the engine may exhibit knocking or pinging sounds, especially under load.
  • Solution: Replacement of the faulty knock sensor(s).
  • Estimated Cost to Fix: $200 - $500+ (depending on location and accessibility of the sensor)
  • Recalls: None Found

Transmission

4L65-E Four-Speed Automatic

• Transmission Slipping/Hard Shifting
  • Description/Symptoms: The transmission may slip between gears, shift harshly, or fail to shift at all. This can be caused by worn clutches, valve body issues, or low fluid level/condition.
  • Solution: Diagnose the root cause. It may require a transmission fluid flush, valve body repair/replacement, or a complete transmission rebuild/replacement.
  • Estimated Cost to Fix: $150 (fluid flush) - $3000+ (rebuild/replacement)
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: The rear of the vehicle may sag, the air suspension warning light may illuminate, and the compressor may be noisy or fail to run.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Air Ride System Leaks (If Equipped)
  • Description/Symptoms: The rear of the vehicle may sag, the air suspension warning light may illuminate, and the compressor may run continuously.
  • Solution: Find source of leak (air struts, lines, etc.) and replace or repair
  • Estimated Cost to Fix: $100 - $1,000+ depending on the location and severity of the leak
  • Recalls: None Found

Electrical

• Transfer Case Encoder Motor Failure
  • Description/Symptoms: The vehicle may be stuck in four-wheel drive, or unable to shift into or out of four-wheel drive. The service four-wheel drive light may illuminate.
  • Solution: Replacement of the transfer case encoder motor.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Instrument Cluster Issues
  • Description/Symptoms: Gauges may become erratic, stop working, or display incorrect readings. The entire instrument cluster may fail.
  • Solution: Repair or replacement of the instrument cluster.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: Doors may not lock or unlock with the remote or the door switch.
  • Solution: Replacement of the door lock actuator.
  • Estimated Cost to Fix: $150 - $300+ per door
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof may get stuck, be slow to open/close, or not open/close at all.
  • Solution: Sunroof motor repair or replacement
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found

Summary

The 2008 Hummer H2, while a capable and distinctive vehicle, can suffer from a variety of issues, primarily related to its engine, transmission, electrical system, and suspension. The severity and cost of repairs can vary widely. Some issues like oil pressure sensor failure are relatively minor and inexpensive to fix, while others, such as transmission problems or air suspension failures, can be significantly more expensive. Prospective buyers should be aware of these potential issues and carefully inspect any H2 they are considering purchasing.