Pre-purchase inspection checklist — 2009 Cadillac Sts
The 2009 Cadillac STS is generally reliable but has some issues reported in airbags, stability control, and steering. Despite these problem areas, many owners report satisfaction. Be sure to check for recalls and the presence of existing problems when considering a purchase.
Known issues to inspect
Airbag deployment failure
How to check: Verify dashboard warning lights and recall completion.
ESC malfunction
How to check: Ensure ESC light is off during test drive.
Steering difficulty
How to check: Test steering at various speeds for stiffness.
Test-drive walkthrough
- 01
Cold start
What to check: Listen for knocking or ticking noises.
Red flag: Persistent engine noise
- 02
First minute idling
What to check: Check for unusual vibrations or idle speed.
Red flag: Rough idling
- 03
Slow speed driving
What to check: Test steering for smooth functionality.
Red flag: Stiff or noisy steering
- 04
Highway acceleration
What to check: Monitor for ESC warning light activation.
Red flag: ESC light comes on
- 05
Braking
What to check: Assess braking response and smoothness.
Red flag: Spongy or delayed braking response
- 06
Parking maneuvers
What to check: Test steering wheel return to center smoothly.
Red flag: Steering doesn't self-center
Questions for the seller
Use this exact phrasing.
- Has the airbag recall been addressed?
- Any issues with the stability control?
- Have steering components been serviced or replaced?
- Can you provide recent maintenance records?
- Has the car experienced any electrical problems?
Documents to request
Don't sign anything until you have these.
- Recent maintenance records
- Proof of airbag recall repairs
- Accident and repair history
- Title and registration
- Vehicle inspection reports
Generated by gpt-4o on 8/24/2026. Grounded in the NHTSA recall corpus and owner-complaint patterns for the 2009 Cadillac Sts.