2007 Cadillac STS

2007 Cadillac STS

The 2007 Cadillac STS is a luxury sedan offered with a variety of engine and transmission options. The base engine is a 3.6L V6 that produces 252 horsepower and 252 lb-ft of torque. It is paired with a 6-speed automatic transmission. The STS is also available with a 4.6L V8 engine that produces 320 horsepower and 315 lb-ft of torque. The V8 engine can be paired with either a 6-speed automatic transmission or a 6-speed manual transmission.

Overall, the 2007 Cadillac STS is a well-rounded luxury sedan that offers a comfortable and refined ride. However, there are a few common issues that owners should be aware of.

Engine

• 3.6L V6
  • Intake Manifold Failure
    • Description/Symptoms: The intake manifold can crack, causing a loss of coolant and a decrease in engine performance.
    • Solution: Replace the intake manifold.
    • Estimated Cost to Fix: $1,000 - $1,500+
    • Recalls: None Found
  • Timing Chain Tensioner Failure
    • Description/Symptoms: The timing chain tensioner can fail, causing the timing chain to skip and potentially resulting in engine damage.
    • Solution: Replace the timing chain tensioner.
    • Estimated Cost to Fix: $500 - $1,000
    • Recalls: None Found
• 4.6L V8
  • Head Gasket Failure
    • Description/Symptoms: The head gasket can fail, causing a loss of coolant and a decrease in engine performance.
    • Solution: Replace the head gasket.
    • Estimated Cost to Fix: $1,500 - $2,000+
    • Recalls: None Found
  • Oil Leak from Rear Main Seal
    • Description/Symptoms: The rear main seal can leak oil, causing a loss of oil and a decrease in engine performance.
    • Solution: Replace the rear main seal.
    • Estimated Cost to Fix: $500 - $1,000
    • Recalls: None Found

Transmission

• 6-Speed Automatic Transmission
  • Shift Solenoid Failure
    • Description/Symptoms: The shift solenoid can fail, causing the transmission to shift erratically or not shift at all.
    • Solution: Replace the shift solenoid.
    • Estimated Cost to Fix: $300 - $500
    • Recalls: None Found
• 6-Speed Manual Transmission
  • Clutch Master Cylinder Failure
    • Description/Symptoms: The clutch master cylinder can fail, causing the clutch to become inoperable.
    • Solution: Replace the clutch master cylinder.
    • Estimated Cost to Fix: $200 - $400
    • Recalls: None Found

Suspension

• Front Control Arm Bushing Failure
  • Description/Symptoms: The front control arm bushings can fail, causing the suspension to become loose and noisy.
  • Solution: Replace the front control arm bushings.
  • Estimated Cost to Fix: $400 - $600
  • Recalls: None Found
• Rear Shock Absorber Failure
  • Description/Symptoms: The rear shock absorbers can fail, causing the suspension to become bouncy and unstable.
  • Solution: Replace the rear shock absorbers.
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery can drain quickly, even when the car is turned off.
  • Solution: Inspect the electrical system for a parasitic draw.
  • Estimated Cost to Fix: $100 - $200+
  • Recalls: None Found
• Alternator Failure
  • Description/Symptoms: The alternator can fail, causing the battery to not charge and the car to lose power.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $500 - $700
  • Recalls: None Found

Interior

• Sunroof Seal Failure
  • Description/Symptoms: The sunroof seal can fail, allowing water to leak into the car.
  • Solution: Replace the sunroof seal.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: The door lock actuator can fail, causing the door to not lock or unlock properly.
  • Solution: Replace the door lock actuator.
  • Estimated Cost to Fix: $200 - $300
  • Recalls: None Found

Exterior

• Fog Light Bezel Failure
  • Description/Symptoms: The fog light bezel can crack or fall off.
  • Solution: Replace the fog light bezel.
  • Estimated Cost to Fix: $100 - $200
  • Recalls: None Found
• Headlight Failure
  • Description/Symptoms: The headlights can fail, dimming or completely going out.
  • Solution: Replace the headlight bulb or assembly.
  • Estimated Cost to Fix: $100 - $300
  • Recalls: None Found

Summary

The 2007 Cadillac STS is a well-rounded luxury sedan with a few common issues that owners should be aware of. The most severe and expensive issue is the head gasket failure on the 4.6L V8 engine, which can cost over $2,000 to fix. Overall, the cost of these issues can range from $100 to over $2,000.