2003 Cadillac CTS used buying checklist

Test for the problems owners report most

The most reported problems of this model year, with what to look for on the test drive.

• Engine stalls while driving31 owner complaints, usually around 88,000 miles

  Start the engine cold and listen for knocking or ticking. Check for warning lights, oil leaks and a low oil level, and ask how often oil had to be topped up.

• Headlights failing or too dim17 owner complaints, usually around 49,000 miles

  Check every exterior and interior light, and look for condensation inside the headlights.

• Fire, smoke or burning smell12 owner complaints, usually around 80,000 miles

  Test every screen, camera, power window, lock and the key fob. With the engine running, make sure no warning lights stay on.

Make sure these recalls were done

Recall repairs are free at any dealer of the brand. Ask the seller for proof, or have a dealer check the VIN.

• Electrical systemRecall number 14V394000, Jul 2, 2014
• Service brakes, hydraulicRecall number 10V105000, Mar 17, 2010
• EquipmentRecall number 03V250000, Jul 15, 2003
• SteeringRecall number 03V115000, Mar 24, 2003

Service bulletins worth asking about

Repair instructions the maker sent to dealers for known problems. Ask whether any of these repairs were done.

• This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.Mar 28, 2025
• Electrical systemOct 25, 2024
• Vehicle Wide Programming (VWP) is a new process to update software on GM VehiclesAug 26, 2024
• This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves...Jun 28, 2024
• This service bulletin provides information for dealers/technicians on Service Programming System (SPS)...Jun 6, 2024
• This bulletin provides information for electrical ground repairs using new General Motors replacement...Mar 28, 2024

Before you pay

• Decode the VIN and make sure it matches the title, the registration and the car itself.
• Get a vehicle history report to check for accidents, salvage or flood titles and odometer problems.
• Ask for service records, especially oil changes and any transmission fluid service.
• Start the car from cold, and drive it at city and highway speeds for at least 20 minutes.
• Have an independent mechanic inspect the car before you sign anything.