2006 Cadillac CTS engine problems

Filed Jun 1, 2026 · Brakes, Engine · NJ

Engine burns 1quart of oil, 100 miles. Brakes went to floor, brake lines had holes at 69,000 miles. Driver rear axel leaks. 2006 Cadillac CTS is a lemon!! Money Pit !!!

Filed May 28, 2025 · Engine · 181,475 miles · FL

The contact owns a 2006 Cadillac CTS. The contact stated that while driving with the cruise control set to 75 MPH, the vehicle was shuddering, and the engine was misfiring. The vehicle was taken to an independent mechanic who determined that the computer was not communicating with the vehicle. The vehicle was taken to the local dealer where it was diagnosed and determined that the computer had malfunctioned. The vehicle was not repaired. The manufacturer was called but the phone disconnected. The failure mileage was approximately 181,475.

Filed Oct 25, 2021 · Airbags, Engine · OK

Thank these things i feel cadilac should consider fixing due to milage before and after i purchased the cadilac due to the miles before and after purchase. Due to being 100% disabled since 2009, Air bag & safety belt system light comes on when i have onstar diagnose the problem they said it has something to do with my seat belt system on passenger side which mind you isnt used often at all and cadilac will not help with the cost and was told by onstar it needs repairs asap because it could cause air bags to pop out while driving or not come out during a crash. Im afraid some times driving it. In the 7yrs of owning this i maybe put around 40,000 miles on the car its in good condition. Which lead me to the other problem due to miles. When i purchased the cadilac a few days later the check engine light came on it was the catalytic converter it was almost $800 it has two of them the dealer repaired it. Here the other day i had onstar do a complete system scan and the report showed the converter was in the process of going out again but just hasnt triggered my check engine lite. I was shocked because of the miles i drivewhich is under 6000 miles a yr and i use top grade fuel there isnt any way these converters should be going out they should have lasted for the rest of my life and the cars life i take very good care of it changing the oils on a regular bases and other cares are met but when talk to cadilac they didnt even consider my care and miles driven at all or find out why tne converter is needed twice since i owned the car when most cars never need converter replacement. Im 62 yrs old, these are concerns i have but mostly the treatment by cadilac (GM) the safety part being on passenger side that seat never hardly get used but could cause air bags to open while driving and two convertersin 6-7 years of ownership when most cars never need one and othhers just once. Which tells me theres a problem some where else causing it to not work properly, but it didnt matter.

Filed Jun 11, 2020 · Engine · 175,000 miles · IN

Tl* the contact owns a 2006 cadillac cts. The contact stated that while driving at 73 MPH, the vehicle loss motive power without warning. The contact managed to veer to the shoulder of the road. The contact attempted to restart the vehicle however, the vehicle failed to start. The vehicle was towed to her residence and towed the following day to an independent mechanic to be diagnosed. The contact was informed that the piston rods and crankshaft needed to be replaced. The vehicle was not repaired. The failure recurred. The vehicle was taken to c & c auto (834 e maumee st, angola, in 46703, (260) 624-2011) to be diagnosed. The contact was informed that the engine needed to be replaced. The contact's husband replaced the starter however, the engine was not replaced. The manufacturer was notified of the failure. The failure mileage was approximately 175,000.

Filed Apr 10, 2018 · Engine · 110,000 miles · TX

Timing chain missing teeth due to tensioner problem in the vehicle. I believe this is a more than common problem with the vehicle according to google reports. Please investigate. This problem could have killed me and my children as we left from church

Filed Nov 6, 2017 · Engine, Transmission · 40,000 miles · TN

Tl* the contact owns a 2006 cadillac cts. The contact stated that the vehicle made an abnormal sound from the engine compartment. The vehicle was taken to crest cadillac (2121 rosa l parks blvd, nashville, tn) where it was diagnosed that the motor and transmission support were not the correct specifications for the engine installed in the vehicle. The manufacturer was notified of the failure and referred the contact to the federal safety agency. The failure mileage was approximately 40,000. The VIN was not provided.

Filed Jun 20, 2017 · Electrical, Engine · 90,300 miles · WI

This vehicle has had thousands of complaints about ECM related problems. Every complaint is the same. The computer causes the temp gauge, fuel gauge to stop working, the tc light & antitheft lights to come on, and the key being stuck in the ignition. It renders the car undriveable because the temp & fuel gauges stop working. I have researched this and there has been the exact same issue with thousands of cars!!! When I contacted cadillac about this they said I would have to pay hundreds of dollars for a diagnoses fee. I told them that this is obviously a defect with poor design and/or bad parts. I have included just one of many links that owners have had with this model of car. This model needs to be recalled and cadillac needs to fix this ongoing problem!! Http://www.topix.com/forum/autos/cadillac-cts/t0o6tkb3dqgank509/p3 this is so wrong that they have received thousands of complaints for the exact same problem I mentioned above and have done nothing to fix it!!!!

Filed Jan 18, 2017 · Engine · 38,000 miles · OH

Engine has used one quart of oil every 800 to 1000 miles since I bought it in 2013. No smoking, no leaking. Just disappears and no way to know where it went. Only had 38,000 miles on it and has 85000 miles on it now and still does it. Told by one place that general say it is normal for that car? Don't believe that.. Was almost empty be time I was having problems and checked it. I had put 3000 mile on then and did not expect a oil loss like that. Have kept eye on it not to get that low since.

Filed Jun 22, 2016 · Electrical, Engine · 100,000 miles · GA

While returning from a trip, the engine shut off and all the power in the car was gone, while driving (in motion). We had been driving approximately 1.5hrs. We were going about 65mph, when the radio and AC went off. There was a message that said something about "battery reserve" (?????) I turned the radio and air back on. Immediately after, "service brake assist" message, then entire dashboard (including speedometer) goes dead. Car shuts off and immediately decelerates. Fortunately, we were in the slow lane already and could get out of quickly moving traffic (and the cars behind us could swerve into the other lane to avoid hitting us). On the side of the road, all power was still lost and could not remove the key from ignition. Attempted to "jump off", which restored power to remove the key. But vehicle would not start and ultimately had it towed. Dealer said motor was locked but didn't know (or immediately care) why. After I prodded the service manager, the technician called to say it was the alternator belt that was locked, causing the motor to be locked. With all of the ignition switch issues that I have read about the last 2 days, I am concerned that neither of those are the cause, but a result. My key "fix" lasted about 2 days. Although mentioned, the key was not "fixed" on the next visit.

Filed Jun 1, 2016 · Engine · 119,701 miles · NJ

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. I arranged for the vehicle to be towed to the holman cadillac dealer in my area and received the diagnostics report. Upon tear down, they found all four cam shafts okay but crank gear is off 5 teeth due to primary chain tensioner wear which caused slack in chain and allowed gear to jump time. I enclosed the document from them in the complaint.