What are the most common Cadillac DTS problems?
According to Au7o's analysis of 220+ owner reports, the 2009 Cadillac DTS has 6 documented issues. The most frequently reported are: Northstar 4.6L V8 Head Bolt/Head Gasket Failure, Heated Washer Fluid Module Can Ignite — Recall 10V240000, Recall 14V355000: Heavy Key Ring Can Move the DTS Ignition Switch Out of Run. Of these, 3 are rated critical and should be addressed promptly.
Is the Cadillac DTS reliable?
The 2009 Cadillac DTS has 6 known issues documented across 220+ owner reports. 3 issues are rated critical: Northstar 4.6L V8 Head Bolt/Head Gasket Failure and Heated Washer Fluid Module Can Ignite — Recall 10V240000 and Recall 14V355000: Heavy Key Ring Can Move the DTS Ignition Switch Out of Run. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Cadillac DTS problems?
Repair costs for known Cadillac DTS issues range from $200 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Northstar 4.6L V8 Head Bolt/Head Gasket Failure, typically costs $3,000-$6,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2006-2011 Cadillac DTS Northstar 4.6L V8 Head Bolt/Head Gasket Failure?
The 2006-2011 DTS (DeVille's successor) continues to use the Northstar 4.6L V8 with the same head bolt thread-stripping issue. GM made minor improvements to the later Northstar engines (L37 and LD8 variants) but never fully resolved the fundamental design flaw of steel bolts in a… Repairs typically run $3,000-$6,000. Severity: high.
What is the 2006-2009 Cadillac DTS Heated Washer Fluid Module Can Ignite — Recall 10V240000?
NHTSA recall 10V240000 covers 2006-2009 Cadillac DTS sedans built with the optional heated washer fluid system (HWFS). A 2008 recall had already added a fuse to the module's control circuit harness to limit the effects of a printed circuit board short, but GM continued to receive… Severity: high.
What is the 2006-2011 Cadillac DTS Recall 14V355000: Heavy Key Ring Can Move the DTS Ignition Switch Out of Run?
Every model year of the Cadillac DTS, 2006 through 2011, is covered by GM recall 14V355000. NHTSA's stated defect is that the weight on the key ring, plus road conditions or some other jarring event, may cause the ignition switch to move out of the run position. GM's summary open… Severity: high.
What is the 2006-2011 Cadillac DTS Rear Air Suspension Compressor and Leveling Failure?
The DTS rear self-leveling air suspension compressor burns out from overwork when the air springs develop slow leaks. The rubber air springs crack with age, causing the rear to sag overnight and the compressor to run constantly until it fails. Repairs typically run $300-$1,200. Severity: medium.
What is the 2006-2011 Cadillac DTS Power Tilt/Telescope Steering Column Motor Failure?
The power-adjustable steering column motors fail, leaving the column stuck in one position or failing to retract when the vehicle is turned off. The column is supposed to retract for easy entry/exit and can block the driver from comfortably entering the vehicle when it fails in t… Repairs typically run $200-$600. Severity: medium.
What is the 2006-2011 Cadillac DTS Confirm the Oil Leak Source Before Rear-Seal or Oil-Pan Repair (01-06-01-011O)?
GM bulletin 01-06-01-011O covers 2024 and prior GM passenger cars and directs technicians to inspect the oil pan, engine covers, oil lines and fittings for external leakage. It does not establish that every 2006-2011 DTS leak comes from the rear main seal or oil-pan gasket, so th… Severity: medium.
