2008 Pontiac G6

The 2008 Pontiac G6 was a mid-size sedan offered in various configurations, including coupe and convertible options. Engine choices included a 2.4L inline-4, a 3.5L V6, and a 3.9L V6. The 3.5L V6 produced approximately 217 horsepower and 217 lb-ft of torque. The G6 was generally praised for its sporty handling and attractive styling but criticized for its interior quality and some reliability issues. Common complaints include electrical problems, particularly with the instrument panel and various sensors, as well as some drivetrain concerns.

Engine

2.4L Inline-4

• Excessive Oil Consumption
  • Description/Symptoms: The engine consumes an abnormally high amount of oil, requiring frequent top-offs between oil changes. Blue smoke may be visible from the exhaust.
  • Solution: Replacing piston rings may mitigate the oil consumption.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found

3.5L V6

• Intake Manifold Failure
  • Description/Symptoms: Cracking or warping of the intake manifold, leading to vacuum leaks and engine misfires. Check engine light illumination.
  • Solution: Replacement of the intake manifold.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

3.9L V6

• No Issues Found

Transmission

4-Speed Automatic (All Engines)

• Harsh Shifting/Slipping
  • Description/Symptoms: Rough or delayed gear changes, transmission slipping, especially between 2nd and 3rd gear, and potential transmission failure.
  • Solution: Transmission rebuild or replacement.
  • Estimated Cost to Fix: $2000 - $4000+
  • Recalls: None Found

6-Speed Automatic (3.9L V6 Only)

• No Issues Found

Suspension

• Front Strut Mount Failure
  • Description/Symptoms: Clicking or popping noises from the front suspension when turning or going over bumps. Premature wear on tires.
  • Solution: Replacing the strut mounts.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Rear Suspension Sagging
  • Description/Symptoms: The rear of the vehicle sits lower than normal, especially when loaded. Reduced ride quality.
  • Solution: Replacing the rear shocks and springs.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Electrical

• Instrument Panel Issues
  • Description/Symptoms: Intermittent or complete failure of the instrument panel, including gauges and displays.
  • Solution: Replacement of the instrument panel or repair of faulty connections.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found
• Body Control Module (BCM) Failure
  • Description/Symptoms: Malfunctions in various electrical systems, such as power windows, door locks, and lighting.
  • Solution: BCM replacement and programming.
  • Estimated Cost to Fix: $300 - $1000+
  • Recalls: None Found
• Turn Signal Malfunction
  • Description/Symptoms: Turn signals may work intermittently or fail completely, often due to a faulty flasher relay or switch.
  • Solution: Replacing the flasher relay or turn signal switch.
  • Estimated Cost to Fix: $50 - $200+
  • Recalls: None Found

Exterior

• Headlight Housing Clouding/Yellowing
  • Description/Symptoms: Headlight lenses become cloudy or yellowed, reducing visibility at night.
  • Solution: Headlight restoration or replacement.
  • Estimated Cost to Fix: $50 - $200+ (restoration) or $200 - $500+ (replacement)
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof may become stuck, leak, or make excessive noise when opening or closing.
  • Solution: Repair or replacement of sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Summary

The 2008 Pontiac G6 is a vehicle with a mixed bag of issues. Engine problems such as oil consumption and intake manifold failures can be costly, as can transmission issues like slipping. Electrical problems are also common, especially instrument panel and BCM failures. While some of these issues are relatively minor, others can lead to significant repair bills.