2006 Cadillac CTS Problems

What owners report

Owners of the 2006 Cadillac CTS most often report the air bag warning light staying on, usually traced to the front passenger seat sensor, followed by low-speed braking problems where the pedal feels soft or the car does not stop while turning into a parking space. Transmission and rear differential complaints, engine stalling or power loss, and cold-start or fuel delivery problems also appear, with reports spread from very low mileage up past 150,000 miles.

1. 1
   Air bags

   Air bag warning light / passenger seat sensor

   • 70 complaints (26%)
   • median 67,700 mi at 5.8 yrs old (62 state mileage)
   • 3 mention a crash, fire or injury
   • owner-quoted repair $777 (median of 8 quotes)
   • filed 2009–2026

   Owners describe the air bag light or a "service air bags" message staying on, often together with the passenger air bag off indicator. Dealers and independent mechanics typically diagnose the front passenger seat sensor or sensing mat as the cause and quote a replacement, and several owners say they were told their vehicle was not covered by the related recall because of its VIN. Reported from around 12,000 to 175,000 miles, often after the vehicle is started or while driving at highway speed.

   Recall 10V644000

   What to check: Turn the key and confirm the air bag light goes out and the passenger air bag indicator reads correctly with someone seated in the passenger seat; ask whether the passenger sensing system recall work was done for this VIN.

   2 excerpts from owner complaints in NHTSA records

   “Service airbag alert on the information center, airbag icon lit on the instrument panel, and passenger airbag off indicated on the rearview mirror. Diagnosis at a Cadillac dealer verified the problem to be identical to the reason for recall 10v-644 (NHTSA action number : eq11001.) the dealer's service manager said my car did not qualify for repair since my VIN was not included in the recall population. …”

   NHTSA complaint #10617295, filed 2014-07, 117,830 miles

   “I have a Cadillac CTS 2006 and my air bag light came on for no reason. I took the car to the Cadillac dealer for diagnosis and they found out that the front sensor control module needs to be replaced. I called GM motors, because I found out the same sensor is recalled for Cadillac CTS models 2005-2006 and the campaign id # is 10v644000, however GM told me that my car is too old to honor the recall and they refuse to replace it. …”

   NHTSA complaint #10386377, filed 2011-03, 57,062 miles
2. 2
   Brakes

   Brake pedal soft or car will not stop at low speed

   • 54 complaints (20%)
   • median 69,000 mi at 7.9 yrs old (46 state mileage)
   • 8 mention a crash, fire or injury
   • filed 2006–2026

   Owners describe the brake pedal going soft or close to the floor, sometimes with ABS, traction control and "service brake assist" messages, and the car failing to stop while slowly turning into a parking space or approaching a stop. In some reports the only way to stop was shifting into park; dealers often could not reproduce the problem or attributed it to worn rotors, and one report notes a brake hose or line concern was addressed by recall in certain states. Mostly at low speeds during parking or turning, reported from under 10,000 miles up to about 160,000 miles.

   Recall 10V105000

   What to check: Test the brakes at walking pace while turning into a parking space and check pedal firmness; ask for service records on brake hoses, ABS module and hub work, and confirm whether the regional brake hose recall applies.

   2 excerpts from owner complaints in NHTSA records

   “Coming of the turnpike this morning and when I tried to stop my car it kept going I had to put my car in park so that the car could come to a stop. This has not been my first time dealing with this problem when turning into a parking space my car does the same thing. I have took my car to the dealer and they found nothing wrong with the car.”

   NHTSA complaint #10361711, filed 2010-10, 78,200 miles

   “I have read numerous complaints for the same issue I am reporting on the internet on various websites. The dealership mechanics can't determine the issues and something has to be done! The first time I experienced the problem I was slowly (less than 5mph) turning the steering wheel in the right direction into a parking space and the vehicle would not stop, it jumped the sidewalk, but stopped before hitting the building. …”

   NHTSA complaint #10567575, filed 2014-03, 80,000 miles
3. 3
   Engine

   Engine stalling or losing power while driving

   Mentioned in 8 of 60 sampled complaints

   Complaints describe the engine shutting off or losing power without warning at highway or moderate speed, sometimes with shuddering or misfire, and then failing to restart. Diagnostics ranged from piston or crankshaft damage and timing chain failure to a computer module that stopped communicating; in some cases the cause was not confirmed. Reported from about 40,000 to 181,000 miles, including at highway speed.

   Recall 14V3940003 related service bulletins

   What to check: Ask about oil consumption between changes and check the oil level for a strong fuel or burning smell; confirm whether the ignition-related recall was completed and have any stored engine codes read before purchase.

   2 excerpts from owner complaints in NHTSA records

   “I was driving the vehicle and was hit from behind and went into a curb. My airbags did not deploy and the car would not restart. The engine completely shut off. The car continue to have problems with the engine and smoking after it was repaired by a GM dealer. We had to turn the car in and file bankruptcy after it stopped working.”

   NHTSA complaint #10826007, filed 2016-02, 40,000 miles

   “During the winter february 2015 I walked out of my residence, went to start my vehicle & it would not turn over. I accounted the issue as to the weather being below zero temperature. A few days later, when the temperatures were higher the vehicle still would not start. The day before the CTS like not start, I noticed it was driving a little sluggish that evening when I drove to the bank. I just had a tune up done on the vehicle two months prior and never had any problems prior. …”

   NHTSA complaint #10871775, filed 2016-06, 119,701 miles
4. 4
   Transmission and drivetrain

   Rough or failed shifting and rear differential noise

   Mentioned in 5 of 60 sampled complaints

   Owners report harsh or delayed shifting, difficulty engaging reverse on manual cars, and jerking when shifting into gear. Others describe vibration, grinding or a rumbling noise from the rear with the dealer diagnosing a failed differential or leaking pinion seal; some reports link transmission trouble to coolant contamination through the radiator cooler. Reported from about 5,000 to 120,000 miles, with differential noise often noticed during acceleration or at cruising speed.

   Recall 07V5890002 related service bulletins

   What to check: During a test drive listen for rear-end whine or grinding and feel for harsh shifts; check for fluid leaks at the rear axle and ask whether the pinion seal recall was performed.

   2 excerpts from owner complaints in NHTSA records

   “The airbag warning indicator dash & radio appeared 6/24/2015. I took the vehicle to the service department at bayview Cadillac, ft. Lauderdale. Fl on 6/27/2015. I was advised that problem was that airbag sensor in passenger set needed to be replaced at price of $800. Further that the problem was that the air bag sensor, which the service tech described as pillow like, probably had a kink in it. There was a recall (NHTSA campaign number 10v105000), however, both baview Cadillac and GM recall center advised that my vehicle was not included. …”

   NHTSA complaint #10731432, filed 2015-07, 85,000 miles

   “The contact owns a 2006 Cadillac CTS. The contact stated while driving at various speeds, the vehicle vibrated violently and a loud grinding noise was heard from the rear differential. The failure recurred on numerous occasions. The vehicle was taken to a dealer where it was diagnosed that the rear differential needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 71,536.”

   NHTSA complaint #10662385, filed 2014-12, 71,536 miles

Buying note. These cars are old enough that maintenance history matters more than mileage, so ask for records on the air bag sensor, brakes, transmission and fuel pump, and verify recall completion by VIN. A thorough test drive at low speed in a parking lot and a listen for rear-end noise will reveal the two most commonly reported problems.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.