2004 Pontiac GTO

The 2004 Pontiac GTO marked the return of the iconic nameplate to the American market after a 30-year absence. This modern GTO, based on the Australian Holden Monaro, came with a powerful 5.7L LS1 V8 engine producing 350 horsepower and 365 lb-ft of torque. All GTOs came standard with a Tremec T56 6-speed manual transmission, with the option of a 4L60E 4-speed automatic transmission. While appreciated for its performance and relative affordability, some owners have reported issues with certain components of the vehicle. Some common criticisms include the somewhat bland exterior styling and interior compared to its muscular performance capabilities.

Engine

5.7L LS1 V8

• Knocking Noise From Engine
  • Description/Symptoms: Some owners have reported experiencing a knocking noise coming from the engine, especially during cold starts. This issue can be due to piston slap.
  • Solution: While some cases of piston slap are considered normal, severe cases may require piston replacement.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• Oil Consumption
  • Description/Symptoms: Some owners have reported issues with the 5.7L LS1 engine consuming oil at a higher-than-normal rate.
  • Solution: Possible solutions include replacing valve seals or piston rings, depending on the severity of the consumption.
  • Estimated Cost to Fix: $1,000 - $3,000+
  • Recalls: None Found

Transmission

Tremec T56 6-Speed Manual

• Shifter Issues
  • Description/Symptoms: Difficulty shifting into certain gears, especially at higher RPMs.
  • Solution: Replacement of shifter bushings, or a complete shifter upgrade.
  • Estimated Cost to Fix: $50 - $500+
  • Recalls: None Found
• Clutch Failure
  • Description/Symptoms: Clutch slippage or failure.
  • Solution: Clutch replacement. Consider aftermarket upgrades for improved performance and reliability.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

4L60E 4-Speed Automatic

• Soft or Delayed Shifts
  • Description/Symptoms: The 4L60E is generally considered a less robust transmission. It can suffer from soft or delayed shifts, particularly with age and increased mileage.
  • Solution: A transmission rebuild or replacement. A shift kit can be installed during the rebuild process.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

• Rear Strut Tower Bushing Failure
  • Description/Symptoms: Rear strut tower bushings can fail.
  • Solution: Replacing the strut tower bushings can help.
  • Estimated Cost to Fix: $100 - $300
  • Recalls: None Found

Electrical

• Dimming Headlights
  • Description/Symptoms: Headlights dimming when the engine is idling or when electrical accessories are used.
  • Solution: Check the battery voltage, alternator output, and grounds.
  • Estimated Cost to Fix: $50-$300+
  • Recalls: None Found
• Power Window Motor Failure
  • Description/Symptoms: Power windows failing to operate.
  • Solution: Replacing the power window motor.
  • Estimated Cost to Fix: $150 - $350+
  • Recalls: None Found

Exterior

• Sagging Door Panels
  • Description/Symptoms: The door panels have been known to sag away from the door, particularly towards the front.
  • Solution: Re-gluing the panel, or installing metal clips/braces.
  • Estimated Cost to Fix: $50 - $200+
  • Recalls: None Found

Interior

• Center Console Lid Breakage
  • Description/Symptoms: The center console lid hinge is prone to breaking.
  • Solution: Replacing the entire center console, or sourcing a replacement lid and hinge assembly.
  • Estimated Cost to Fix: $50 - $300+
  • Recalls: None Found
• HVAC Blend Door Actuator Failure
  • Description/Symptoms: Failure of the HVAC blend door actuator can cause issues with temperature control in the cabin.
  • Solution: Replacing the faulty blend door actuator.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Summary

The 2004 Pontiac GTO, while a performance bargain, has several common issues to be aware of. Engine issues like piston slap and oil consumption, along with potential transmission problems for both manual and automatic variants, can lead to costly repairs. Suspension components like the strut tower bushings are also known to fail. Electrical problems and interior trim issues are less severe but still worth considering when evaluating a used model. While the severity and cost of these issues can vary, potential buyers should be prepared for the possibility of addressing some of these common problems, especially on higher-mileage examples.