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Cadillac CTS Engine Problems

659 messages,  Last post on May 16, 2013 at 4:36 PM

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What is this discussion about? Cadillac CTS, Engine, Sedan

    
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Messages Page 11 of 66

#99 of 659 RE: 2007 Cadillac CTS bucking by diesel54

May 11, 2010 (1:28 pm)

I have a 2007 Cadillac CTS that after driving for 30-40 miles it will start bucking in situations where I need to eccellerate going up a hill or passing. It has started to do this when coming away from a stop sign but not as much. Has anyone else had this happen. When taken in for service, they have found no codes in the computer. They have been able to duplicate the situation slightly.

#100 of 659 Oil in Coolant reservoir by deadbugdoug

May 11, 2010 (3:18 pm)

2004 CTS 3.6L I have oil in my coolant. Enough to overflow the reservoir when running. I could smell coolant then saw a puddle under the car. Looks like it leaked from the overflow tube. First thought was the oil cooler. I am now being told the 3.6L 2004 does not have one. No water on dip stick or oil cap. Car did not over heat. Seems to run fine for now. Any ideas???

#101 of 659 RE: 2007 Cadillac CTS bucking [diesel54] by gm_bigot

May 12, 2010 (5:58 am)

Replying to: diesel54 (May 11, 2010 1:28 pm)
I have a 2007 and it started doing the same thing after about 25K miles. Two things going on. 1) There is a software update for the Transmission Control Module (TCM) that should be applied. If that doesn't fix it, then go to 2) Replace the torque converter.
There is a TSB out there regarding this issue. Most likely, the torque converter will need to be replaced.

#102 of 659 Re: Oil in Coolant reservoir [deadbugdoug] by gm_bigot

May 12, 2010 (6:01 am)

Replying to: deadbugdoug (May 11, 2010 3:18 pm)
If you truly have oil in your coolant, then you have a blown gasket (head or intake manifold). DO NOT DRIVE THIS CAR! Take it to the dealer or your trusted repair shop. If you continue to drive it, you risk destroying your engine.

#103 of 659 RE: 2007 Cadillac CTS bucking [diesel54] by gmcustsvc

May 12, 2010 (11:59 am)

Replying to: diesel54 (May 11, 2010 1:28 pm)
Hello Diesel54,
I am from GM Customer Service. Has the dealership put a reader in your vehicle so it can look for codes when your vehicle does have an issue? Are they currently working on the vehicle? Thank you,
Mariah GM Customer Service

#104 of 659 Wow I'm not the only one by avguy2

Jun 09, 2010 (11:10 am)

This thread is very interesting. I bought a 3.6L 2005 CTS brand new off the lot. I kept the oil changed in it at the dealer when the OLM system said until the dealer went out of business and the after that I did the oil changes at a local mechanic using Mobil 1 as suggested in the manual. I started to notice that the car was using about 1 quart of oil every 4 - 5000 miles. I spoke with a Cadillac dealer and they said this was not unusual. Then at around 75000 miles in 2008, and out of warranty it began misfiring on the way home from work and by the time I had made it home the engine was misfiring really bad and knocking really bad but no trouble light. When I was pulling into the driveway the check engine light finally came on and the oil level low warning came up. When checked the oil it was empty. Ihad checked it the previous day and it was full. I had my mechanic tow it to his shop and he found that the timing belt had jumped and bent 11 valves. I contacted Cadillac and they told me that because of the age of the vehicle and the mileage there was noting they would do. Still owing money on the car I spent the $5000 and had the valve train replaced.
 
The care ran fine for about 1 year until late last it developed a knock in the lower part of the motor. I was right back to where I started from except this time it needed a new motor and still being in debt up to my eyeballs from the last repair I called around and found a mechanic that put a used motor in it for $3000.
 
The bottom line is that my dream car became a nightmare. I will never get my money back on this car. A car that was $32K new has now cost me over $40k. DO NOT BY A CADILLAC!

#105 of 659 '05 CTS oil problems by cadman4

Jun 09, 2010 (5:06 pm)

84K miles, changed oil and filter every 6K miles, used mobile 1, never had oil consumption problem between oil changes (yes I checked oil level approximately once a month) oil or engine light never came on, oil life 72%. Never any sign of oil leak or fluid on garage floor. Heard slight knock, had recently changed from Chevron to Costco gas, assumed I had water in gas, talked to mechanic said to get additive and run gas tank to near empty. Did this, knock went away. 2 days later car started knocking very loud, had car towed to mechanic, mechanic said there was no oil in car. Engine blown, replacement $8K to $10K. Seems like I am not alone?

#106 of 659 Re: '05 CTS oil problems [cadman4] by temj12

Jun 09, 2010 (10:21 pm)

Replying to: cadman4 (Jun 09, 2010 5:06 pm)
I had an '05 CTS that I bought new and that I sold to a friend of mine. Then I bought a new '09 last January. My first CTS has 49,000 miles so I can't verify what will happen with the engine. When I bought the '05, the dealer told me to follow the OLM. I would change the oil 7 to 8,000 miles. The dealer now tells me that I need to change the oil every 6,000 miles in the '09, which I am doing. He said that they had found that the actuators in the engine were going bad at around 50,000 from going too far between oil changes. One of my friends bought an '05 CTS which was used. He did not have it one year until the engine went out and had to be replaced. Luckily, he had bought one that was certified and Cadillac paid for it. The '09 is a dream to drive, but I only have 11,000 miles and I can't know what kind of service I will get. I am so sorry for the two of you and what you have had to spend. What I wish I knew, was how widespread this problem is.

#108 of 659 Re: '05 CTS oil problems [temj12] by billpaul

Jun 12, 2010 (7:30 am)

Replying to: temj12 (Jun 09, 2010 10:21 pm)
According to Consumer Reports, the CTS engine reliability has been better than average to much better than average except for the first model year (2003), which was worse than average. 2003-05 models have had problems with the cooling system (thrmostate, water pump), but the engine overall appears to be quite sound.
 
So, these problems appear to be anomalies.

Messages Page 11 of 66

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