2006 Cadillac CTS Problems: 4 Known Issues
2006 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated October 2026
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2006 Cadillac CTS has 4 documented known issues, with 2 rated critical. The most serious are Rear-Axle Pinion Seal Can Leak and Allow Differential Failure (Recall 07V589) and Ignition Key Can Move Out of Run and Disable Airbags (Recall 14V394). Across all issues with published estimates, repair costs range from $250 to $900. DIY maintenance guides at au7o.io.
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All 4 Known Issues
NHTSA Recalls10 recalls
SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER
General Motors LLC (GM) is recalling certain 2014-2016 Cadillac CTS vehicles, equipped with heated front seats. The flexible heating mats in the front seats may be damaged over time, resulting in the seat heaters producing excessive heat.
ELECTRICAL SYSTEM:IGNITION
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on July 2, 2014 that they are recalling 554,328 model year 2003-2014 Cadillac CTS vehicles manufactured August 16, 2001, to April 28, 2014, and 2004-2006 Cadillac SRX vehicles manufactured March 20, 2003, to August 11, 2006. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
ELECTRICAL SYSTEM
General Motors LLC (GM) is recalling certain model year 2013-2014 Cadillac CTS, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, GMC Yukon, and Yukon XL, and 2014 Buick Enclave, Chevrolet Express, Impala, Silverado HD, Traverse, GMC Acadia, Savana, and Sierra HD vehicles. In the affected vehicles, the chassis electronic module may be internally contaminated, resulting in an electrical short.
SUSPENSION:REAR
GENERAL MOTORS IS RECALLING CERTAIN MODEL YEAR 2009-2010 CADILLAC CTS VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH A WAX COATING ON THE REAR SUSPENSION TOE LINK JAM NUTS MAY ALLOW THE NUT(S) TO LOOSEN. IF A NUT SUFFICIENTLY LOOSENS, THE TOE LINK COULD SEPARATE AND THE REAR WHEEL WOULD BE ABLE TO TURN INBOARD OR OUTBOARD. OWNERS MAY HEAR A METALLIC CLANKING NOISE COMING FROM THE REAR OF THE VEHICLE THAT MAY WARN OF A LOOSENING NUT.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
GM IS RECALLING CERTAIN MODEL YEAR 2012 CADILLAC CTS VEHICLES MANUFACTURED FROM OCTOBER 21, 2011, THROUGH OCTOBER 26, 2011. THESE VEHICLES MAY HAVE A CONDITION IN WHICH THE POWER VACUUM BRAKE BOOST PUSHROD RETENTION NUT MAY NOT BE TORQUED TO THE PROPER SPECIFICATION. IF THE NUT IS NOT TORQUED TO THE PROPER SPECIFICATION, THE NUT COULD LOOSEN AND ALLOW THE PUSHROD TO SEPARATE FROM THE BRAKE PEDAL.
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Frequently Asked Questions
What are the most common Cadillac CTS problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2006 Cadillac CTS has 4 documented issues. The most frequently reported are: Rear-Axle Pinion Seal Can Leak and Allow Differential Failure (Recall 07V589), Ignition Key Can Move Out of Run and Disable Airbags (Recall 14V394), 3.6L V6 Oil Consumption Driven by a Restrictive PCV Orifice in the Valve Cover. Of these, 2 are rated critical and should be addressed promptly.
Is the Cadillac CTS reliable?
The 2006 Cadillac CTS has 4 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: Rear-Axle Pinion Seal Can Leak and Allow Differential Failure (Recall 07V589) and Ignition Key Can Move Out of Run and Disable Airbags (Recall 14V394). 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 CTS problems?
Repair costs for known Cadillac CTS issues range from $250 to $900, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2005-2007 Cadillac CTS Rear-Axle Pinion Seal Can Leak and Allow Differential Failure (Recall 07V589)?
On certain 2005-2007 Cadillac CTS vehicles, a rear-axle pinion seal may leak fluid. Continued fluid loss can lead to rear-differential failure, loss of motive power or loss of control. Severity: high.
What is the 2003-2014 Cadillac CTS Ignition Key Can Move Out of Run and Disable Airbags (Recall 14V394)?
On certain 2003-2014 Cadillac CTS vehicles, key-ring weight, road conditions or another jarring event can move the ignition switch out of Run, turn off the engine and prevent airbag deployment in a crash. Severity: high.
What is the 2004-2012 Cadillac CTS 3.6L V6 Oil Consumption Driven by a Restrictive PCV Orifice in the Valve Cover?
The 3.6L V6 pulls crankcase vapor through a fixed-orifice PCV passage integrated into the valve cover rather than a serviceable PCV valve. The orifice sludges up and the baffle behind it does a poor job of separating oil from the vapor stream, so liquid oil is drawn into the inta… Repairs typically run $250-$800. Severity: medium.
What is the 2004-2014 Cadillac CTS 3.6L V6 Water Pump Seal Leaks Intermittently and Only Under Pressure?
The engine-driven water pump on the 3.6L V6 (LY7, LLT and LFX) develops a weep at the shaft seal. What makes this failure hard to catch is that many CTS pumps leak only when the system is hot and fully pressurized; the orange-pink DEX-COOL evaporates off the hot block and leaves… Repairs typically run $400-$900. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.