2007 Cadillac CTS
2007 Cadillac CTS
Overview
The 2007 Cadillac CTS, a mid-size luxury sedan, offered a blend of American comfort and European handling aspirations. It was available with a choice of V6 engines and a rear-wheel-drive platform, with some models featuring all-wheel drive. While generally considered a solid vehicle for its time, like any car, it has specific areas where owners have reported issues. This analysis focuses on common mechanical and electrical problems, excluding routine maintenance, to provide a clear picture of its reliability.
Engine
3.6L V6 (LLT)
Timing Chain Tensioner Failure
- Symptoms: Rattling noise from the front of the engine, especially on startup; check engine light.
- Solution: Replacement of timing chain, tensioners, and guides.
- Cost: $1,200 - $2,500
Oil Leaks (Valve Cover Gaskets)
- Symptoms: Visible oil on the engine block, burning oil smell, low oil level.
- Solution: Replacement of valve cover gaskets.
- Cost: $300 - $600
2.8L V6 (LP1)
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Transmission
6-Speed Automatic (6L50)
Harsh Shifting / Delayed Engagement
- Symptoms: Jerky gear changes, difficulty engaging gears, transmission warning light.
- Solution: Transmission fluid and filter change, solenoid replacement, or full transmission rebuild.
- Cost: $500 - $3,000+
5-Speed Manual (Aisin AR-5)
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Suspension
Standard Chassis
Worn Ball Joints / Control Arm Bushings
- Symptoms: Clunking or rattling noises over bumps, uneven tire wear, vague steering.
- Solution: Replacement of worn ball joints and/or control arm bushings.
- Cost: $400 - $800
Electrical
Body Control Module (BCM)
Intermittent Electrical Gremlins
- Symptoms: Malfunctioning power windows, door locks, interior lights, or dashboard warning lights; sometimes related to water intrusion.
- Solution: Diagnosis and potential reprogramming or replacement of the BCM.
- Cost: $500 - $1,000
Infotainment System
Screen Freezing / Malfunctions
- Symptoms: Touchscreen unresponsive, system reboots, audio issues.
- Solution: Software update or replacement of the infotainment unit.
- Cost: $300 - $1,500
Exterior
Body Panels & Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Interior Trim & Upholstery
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2007 Cadillac CTS presents a mixed reliability profile. The 3.6L V6 engine is prone to timing chain and oil leak issues, which can be costly to repair. The automatic transmission can also develop problems leading to harsh shifting. Suspension components like ball joints and bushings are common wear items that may require replacement. Electrical issues, particularly with the Body Control Module and infotainment system, are also noted. However, the 2.8L V6 engine and manual transmission variants appear to be more robust. Overall, while offering a comfortable ride and decent performance, potential buyers should be aware of these common problem areas and factor in potential repair costs.