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2009 CTS



  • merckxmerckx Posts: 565
    I LIKE the idea of a bare-bones CTS.....For my taste,the standard car comes with plenty. I've read so much bad press about the shift action,though,that I've forgotton about a manual shift.....

    I do know they would be very,very rare.....But I still think it might be fun.
  • bhill2bhill2 Posts: 1,782
    Yeah, I've heard that the shift action on the manual CTS isn't great, but my daily driver is a C5 Corvette which isn't known for its great shift action either. If the CTS even came up to the Corvette standards I would be satisfied, but I don't know if it does.

    2009 BMW 335i, 2003 Corvette cnv, 2001 Jaguar XK cnv, 1985 MB 380SE (the best of the lot)

  • ctsguy2ctsguy2 Posts: 19
    I've got an 09 CTS DI w/AWD and 2300 miles on it. It's currently at the dealer for the third time and I'm starting to regret the purchase. Problems include false warnings about low tire pressure, airbag and onstar module recalls, a drivers door that periodically won't unlock, grinding noises from the driver's window and a major flutter in the engine idle that actually rocks the car. So far I get the standard dealer reply "the technician wasn't able to duplicate the problem". Anyone one else familiar with or experiencing similar issues?
  • paopao Posts: 1,867
    sorry to hear about the problems....didnt think the onstar module recall effected late production 09 MY CTSs only the early ones.....09 non-DI RWD fully loaded heer with 9400 miles, purchased late Sept, problems at all other than a squealing rear brake...which was fixed per the TSB by the dealership.....sounds like the ECM might need to be reflashed....that might take care of the idle issue and the door lock....
  • ctsguy2ctsguy2 Posts: 19
    Thanks for the empathy PAO. Glad that your CTS has been doing well. I'm hoping that these issues will be worked out, and that gas mileage will inch up a bit, as I really do like the car overall.
  • cosmo13cosmo13 Posts: 31
    I have 2008 CTS AWD DI. In the very cold weather my air pressure on dash reads 27PSI check air pressure front right tire. I took car to local tire store for a check and they found 35 PSI. I called dealer and he said to bring car in for computer adjustment.
    I do get a low noise from the engine when car is cold. Once motor warms up after 1 -2 miles the noise goes away.
  • ctsguy2ctsguy2 Posts: 19
    I have had the exact same issue with the tire pressure system twice now. Upon start up my car sounds like a truck, but then quiets down upon warming up. Have heard that that is caused by the high pressure of the direct injection system. A friend of mine says that it reminds him of a cheap worn out Toyota rather then a brand new Caddy. Nothing like friends to cheer you up. :-)
  • I have a 2007 CTS with tire pressure monitoring. I am guessing they may use the same type system in 2008/2009. Each wheel has a frequency, to send the pressure reading to the dash. If you rotate the tires, the dash will say RF when that wheel is now on RR, UNLESS you follow the Procedure to resync the tires.

    The service guy should do that with the rotation, but they may not. You can do the procedure, which is in the owners manual. I recommend that if the pressure monitoring shows a tire low, to verify all tires with a manual guage.
  • I have an '09 CTS with the double panel sunroof, and I'm getting a lot of wind noise that seems to be coming from the sunroof as soon as I'm driving 50-60 mph. It really gets bad over 70 mph. This issue has existed the entire time since I purchased the car approx 7 months ago. Live and learn, I didn't drive over 50 mph on my test drive. The car has been into the Dealer for service multiple times. They've had multiple theories on what's causing the problem, but can't get it fixed. They have completed the fix recommended from the factory bulletin on this issue, but the wind noise still exists. The Dealer is now telling me there's nothing else they can do, that this is normal wind noise for a CTS with this sunroof, and that the next thing for me to do is file a claim with Cadillac Customer Service, which I did last Fri.

    Please share any info you have on this issue with CTS's that have the double panel sunroof, especially if you had the problem and were able to get it resolved. Thanks.
  • paopao Posts: 1,867
    I assume you are talking about wind noise with the double panel sunroof closed and not open.....I have an 09 as well with the sunroof....and mine is noise at with it open...if you notice when you hit the open button it does stop about three inches from fully opening..this is normal....and will still get some wind buffeting......when the roof is open........I have never had a sunroof that didnt cause some kind of noise unless you add an aftermarket wind deflector to it..which I refuse to do might want to check some of the cadillac forums.....there are threads on the issue there...
  • acenjacenj Posts: 58
    Can any of you w/ the DI AWD post your mpg?


  • paopao Posts: 1,867
    depending on the driving style....on other forums Ive seen posted 18-21 city.......and 24-27 highway...I have a RWD non di.....and I average around 24....

    20s in town and 29-31 on the highway.....
  • I've only checked my mileage twice. In a mostly urban route got about 16 and in a highway route got about 20.5 mpg. The car only has 2800 miles, so I'm hoping for an improvement.
  • Yeah same here. Had my 09 CTS since Jan and haven't even thought about worrying about my mileage yet. I'll check it about 10K miles...loving the car thus far it just before the red tag sale ended....
  • I just bought a 09 cts a month ago. i live in south fl. and when the car sits in the hot sun the climate control fan only comes up to about 3/4 speed with the temp control set at 70 degrees. if I lower it to 60 deg or put the fan on high manually it works fine.
    I had a 05 cts and have had climate control in cars since 1988 and when the car was hot inside the fan would come up to full speed until the car began to cool down.
    I had the car back to cadillac and they are telling me that the factory says this is normal in the 0908 and 09 cts.
    I do not buy that. has any one else experienced this and if so what was the fix.
    as for wind noiuse in the sun roof,there is none when it is closed and the gas mileage on highway driving is great. over 30 mpg at 75 mph. local is about 20 mpg.
    I had a 05 cts with an aftermarket sun roof and that always had wind noise and they could not stop it.
  • 8800 on the odometer and trouble free. Just drove from Tampa to Indy @ the speed limit+5. Got 27.6 mpg.
  • Your 27.6 is good highway MPG. I am wonderig if there is anything in common between those getting good MPG and not good MPG highway?

    Do you have the base suspension? Sport Suspension 18" wheels? Or the 18" Summer tire suspension? AWD?

    I am thinking that possibly AWD or Limited Slip is causing the lower MPG reports from some?
  • paopao Posts: 1,867
    AWD is a bit tougher on the MPG....I have a non-DI FE2 suspension 09 CTS RWD, I average 24 combined....and 28-30 MPG on the highway depending on the hills......overall very pleased with the CTS.....4 months old...and just rolled 10K
  • I have a 2009 CTS w/ 1SA, automatic, PDW, PDR. I do not have AWD or sun roof. (PDW & PDR packages includes the FE2 suspension, 18" wheels, & limited slip differential.
  • Anyone experiencing steering wheel vibration above 60 mph with the 2009 CTS? All attempts to fix the problem haven't worked.
  • have had vibration in my 2009 cts awd di engine between 45 to 60 mph since i picked it up jan 12 09 2 visits to service no help,balanced wheels & drive shaft etc service mgr called 2/16 said fix was availble from cadi engineering and had ordered the parts,should be in this friday, hears hoping, if not i will be starting lemon law action
  • That would be great if they have a solution. Did they indicate the source of the problem and what types of parts were ordered?

    Please keep us posted!
  • i kept getting a vibrating feeling in my ears when i got over 40 mph. i have a 2009 cts,1000 miles on it.
    i thought i was nuts and when i mentioned it to my service writer,his reply was we know all about it. they ordered a rear differential insulation kit and re aligned the differential and now all its ok.
    i posted the following question earlier and have not had any response.
    when my car sits in the hot sun and i start it up the climate control blower only comes up to a little more then half speed. i have had climate control in cars since 1988 including a 2005 cts and when the car was hot inside the fan speed would come up to maximum, until the car started to cool down.
    the only way i can get the fan to come up on high speed is to lower the temp to 60 degrees or bring the speed up manually.
    general motors tech has told my dealer that this is the way it works in the 2008 and 2009 cts.
    i think they have a manufacturing defect. if any one else is experiencing this problem,please let me know. if it works properly,i would also appreciate hearing from you.
  • I've got about 3200 miles on my CTS AWD with 3.6DI. Have always noticed a slight vibration in the steering wheel at highway speeds, it but wasn't that severe and thought maybe I was being overly critical. Mine has had the two recalls performed for onstar and airbag, a faulty window regulator replaced and door lock mechanism ordered because it would only sporadically unlock. It seems like every day there are new creaks and rattles but some only intermittent. The newest thing is a drivers seat backrest that creaks loudly when I move around. I'm an average sized and weight guy. Don't know why it would do that, but passengers even comment on it. I looked up the lemon law but no one repair has had to be made more then once, and the vehicle has not been out of service for the required time either. Quickly becoming disheartened with the purchase decision.
  • paopao Posts: 1,867
    there have been two sources of vibration or harmonic has been corrected with road force balancing of the wheels....this requires a hunter balancer I beleive and a tech that has a clue about how to use one......the second is that harmonic sound and in some cases vibration from the drive shaft.....the fix as noted has to due with some new insulators for where I beleve the drive shaft enters the diff.

    all this seems to be car unique......I have an 09 RWD non-DI model fully loaded otherwise...and have neither problem... picked it up in Sept 08 and have over 10K on it now without any problems......

    here is the TSB for the insulators:

    This bulletin is being revised to update model years and add insulator washers (only for vehicles built without washers). Please discard Corporate Bulletin Number 08-07-30-044 (Section 04 - Driveline/Axle).


    Some customers may comment on a drone, boom, moan or vibration during light acceleration which phases in and out in intensity.
    The condition may be most noticeable at about 80 km/h (50 mph), or 1000 - 1300 engine RPM, and occurs over a speed range of 5 to 8 km/h (3 to 5 mph).


    This condition may be caused by the rear axle assembly responding to engine firing frequencies passed through the driveline when the torque converter clutch (TCC) is engaged.


    For All Vehicles -- Calibration Update
    This condition can be verified by driving the vehicle to duplicate the concern and using the Tech 2® to turn off the TCC. If the noise stops when the TCC is turned off, the calibration detailed below should help to eliminate the noise or vibration.
    • This calibration may result in decreased fuel economy up to approximately one mpg/kpg. Because of this, the software should not be used in a vehicle without this concern.
    • There are two calibration part numbers that are "selectable" for this controller. Read the description to determine the correct calibration for this condition.
    • DO NOT replace rear drive axle or propshaft for this concern.
    A revised calibration has been developed to correct this condition. Technicians are to reprogram the transmission control module (TCM) using SPS with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI. As always make sure your Tech 2® is updated with the latest software version.
    For Vehicles Built Prior to VIN Breakpoint 90159377 - Install Insulator Washers After Reprogramming
    1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
    2. Place a transmission jack stand under the rear differential assembly.

    3. Remove the two front differential mounting bolts

    4. Install the rubber insulators (2), GM P/N 20827776, between the rear drive axle and the body
    5. Install the rear differential mounting bolt.
    Tighten the rear differential mounting bolt (1) to 220 N•m(162 lb ft).
    6. Remove the transmission jack stand.
    7. Remove the support and lower the vehicle.

    Parts Information

    Part Number Description Qty
    20827776 INSULATOR ASM - DIFF CARR 2

    Warranty Information

    For vehicles repaired under warranty, use:
    Labor Operation Description Labor Time
    K9532* Transmission Control Module Transmission Reprogramming with SPS 0.4 hr
    Add Install Rubber Insulators in Rear Differential 0.3 hr
    *This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
    GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
    © 2009 General Motors Corporation. All rights reserved.
  • Go to message # 2717 under the topic "2008 Cadillac CTS". The service bulletin to solve the vibration problem is posted there. I suggest you copy it and take it with you to your dealer.
  • Shimmy after 60 mph on my 2008 caused by tires according to my dealer.Two visits to dealer without sucess also excessive wind noise from the sunroof. I have owned several vehicles with sunroofs without this problem including a 2004 CTS.Any advice on these two problems would be greatly appreciated.
  • paopao Posts: 1,867
    sunroof isnt properly adjusted...and have they road force balanced the wheels....with a hunter balancer?..time to try a new dealer..if dealer claims its the tires....have them replace them
  • Hey Guys,

    I just purchased a 2009 CTS AWD 3.6L. Sharp car, but my gas mileage is terrible. 11.2 mpg. Sad
    I've run through a couple tanks of gas from different stations, but the mpg turns out about the same.
    I drive about 25 miles a day round trip to work. I've tried to vary my driving style and drive as conservatively as possible with no real change in mpg. My commute is mostly city driving. I just brought it back to the dealer and they said all things check out OK.
    I have noticed some stuttering in the acceleration. Any thoughts?
    I also got a rental CTS from the dealer while they looked at my car. It was a 2009 RWD 263hp. This car is a lot peppier then mine and has the mpg on the dash listed as 20.5 mpg.

    Hmmm? Something seems wrong here. The dealer said I should drive for a couple thousand miles to get a real idea on the mpg.

    I'm getting 165 to 185 miles to a tank of gas. This will not fly. Do I have a lemon?

    Any thoughts? Tips?

    Thanks for any help.


  • paopao Posts: 1,867
    I would say you round trip wiht each way being approx 12 miles of city only driving contributes to your gas mileage..that short distance hardly allows the engine to reach peak temperature and performance.......with the second impact being the stated 3.6 and didnt indicate it was a DI engine....the rental was DI based on the HP you indicae...and is definitely peppier than the non-DI IMO....I perferred the non-DI overall and chose that one in my 09 with RWD......with 10k on the car now...I average 23-24 overall...and 29-30 on the highway over extended (100 miles or more) average commute is 35 miles one way....about half and half city and highway driving
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