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Cadillac DTS Electrical Issues

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Comments

  • Hello princesspast1,

    Hopefully you are able to get some great insight from chiefcadiman; what are your plans for getting this checked into? If you were thinking about working with your dealership, please let us know as we're available to you through that process.

    Sarah, Cadillac Customer Service
  • Also have a DTS with a battery draining in about 24 hours. Dealer (Sadlon) up here in Barrie figured it was the alternator $1400 bucks later nothing changed. Went back had it all tested for the 2nd time they couldn't find a thing and said the battery was good. Sent me on my way. Went to CTC'S corp who said that the DTS was a notorious GM product with a lousy wiring harness. Saw the reference to the TSB #1906368 and called the service manager at Sadlon who said there was no such thing ... Maybe in the US .. But not Canada ... Called GM Canada in Oshawa .. No clue there either. After $70,loo bucks in Canada nada and GM wants it this way. Anyone in the US who can tell me what the TSB essentially says.
    By the way CTC'S answer for the DTS was like most of the other solutions for this DTS buy a battery buddy and a portable battery .... Best $100 bucks ... Car is off warranty so so much for the local Caddy dealership ... Back to Chrysler for another 300 ......
  • I was glad to find out Im not the only one dealing with the frustration of having my battery go dead on my 2006 DTS. It happened twice last year so I put in a new battery 8 months ago. Everything was fine and it then it went dead again last month. Jumped battery and was told everything looked ok. Then it happened again today - always seems to happen when the car has not been driven for a day or two. This time the mechanic will replace the battery tomorrow and do a draw test. As it seems to be an intermittent problem, Cadillac said the issue might not been seen during the draw test. I will refer them to TSP 1906368 as well as advise them to check for a possible poor ground from negative side f the battery as well as all other suggestions I read here today. I printed out this info to bring with me. Thanks to all.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,403
    Didn't find anything like the # you posted, but I did find these TWO TSB:

    TECHNICAL

    Bulletin No.: 09-08-50-017B

    Date: February 11, 2010

    Subject: No Crank, No Start, Discharged or Low Battery (Reprogram Rear Heated Seat Module)

    Models:
    2006-2010 Cadillac DTS
    Built Prior to February 2, 2010
    2007-2010 Cadillac Escalade, Escalade ESV
    2007-2010 Chevrolet Suburban, Tahoe
    2007-2010 GMC Yukon, Yukon XL
    Built Prior to November 30, 2009
    All Equipped with Rear Heated Seat RPO KA6
    Supercede:
    This bulletin is being revised to add build breakpoint dates. Please discard Corporate Bulletin Number 09-08-50-017A (Section 08 - Body and Accessories).
    Condition

    Some customers may comment about a no crank/no start condition or a discharged or low battery.

    Note
    This condition may be intermittent, therefore it is important to check if a revised calibration has been released on TIS2WEB for this concern, even if the condition cannot be duplicated at the dealer.
    Cause

    This condition may be caused by the rear heated seat module (RHSM) discharging the battery by keeping the serial data bus active, which creates a cumulative continuous draw of four amps on the battery after the vehicle is shut down, until the state of charge reaches three volts.

    Correction

    Important
    DO NOT replace the RHSM or the battery for this concern.
    Reprogram the RHSM with the latest software calibration.

    Important
    Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes.
    A revised calibration has been developed to address this condition. Technicians are to reprogram the RHSM using the Service Programming System (SPS) with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI.

    When using a Tech 2(R) or a Multiple Diagnostic Interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

    During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R) PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

    --------------------------------------------------------------------------------- -

    Bulletin No.: 06-06-03-009

    Date: October 19, 2006

    INFORMATION

    Subject:
    Diagnostic Information on Battery Draw No Start - Body Control Module, BCM Power Timer
    Models:
    2006-2007 Buick Lucerne
    2006-2007 Cadillac DTS
    2006-2007 Chevrolet Impala, Monte Carlo
    2007 Cadillac Escalade, Escalade ESV, Escalade EXT, SRX
    2007 Chevrolet Avalanche, Equinox, Tahoe, Silverado, Suburban
    2007 GMC Sierra, Yukon, Yukon XL, Denali, Denali XL
    2007 Pontiac Torrent
    When performing normal diagnosis on a battery that has gone dead overnight, a technician may notice that the vehicle has approximately 4.1 amp draw on the system. The draw may be steady or may drop down to a low milliamp reading for 1-2 seconds and then rise back up to the 4.1 amp range. If this amp draw condition is observed, check for aftermarket accessories or an improperly installed GM accessory that is wired into circuit 6815 (orange wire) for courtesy lamps. Anytime aftermarket accessories are installed into the courtesy lamp circuit, it can cause the inadvertent power timer in the body control module (BCM) to keep resetting. The BCM will remain awake and cause the draw of approximately 4.1 amps.

    When servicing a vehicle with this concern, back out pin 1 of the connector 2 at the BCM and see if the draw goes away. If the draw goes away, check for an aftermarket accessory (Lojack, non-factory DVD system, alarm, etc.) that is improperly installed in circuit 6815.

    MODERATOR

  • gmcustsvcgmcustsvc Posts: 4,055
    evfilpicker,
    Is your mechanic with one of our GM Dealerships? If so, let us know as we're available to follow up with your service department if you like.
    Sarah, GM Customer Service
  • indytooindytoo Posts: 5
    edited February 2013
    For the first time since I purchased my 06 DTS in Jan. 06, I went out to the garage on Monday to leave and was surprised that there was absolutely no power to start the vehicle. I called for jump start service and it started right up indicating that the battery had totally discharged overnight. I had the battery replaced about a year ago since that was due so that should not be the problem. Dealer ran all their tests and said there was not anything wrong battery or electrical system wise. Now that scares me. My main reason for this email is that I likewise purchased a portable battery to put in my trunk should it be needed. Then, my brain started working and I realized that without power, I cannot open the trunk to get to the portable battery. I guess that I will have to put it on the floor of the back seat area. I also noticed that someone had indicated that you could not unlock the door without power and if that being the case, I still could not get to the portable battery pac, nor, could I get to the hood release so I could get a jump start from another source. And GM just sticks their nose up in the air? Where does one go from here?
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,403
    I would first test the charging system. Also I would not rely on the car's alternator to charge up that dead battery---that makes the alternator work very hard indeed It should be tested and charged. Batteries do fail, even when they are nearly new, and jump-starting a totally dead battery is not a great idea. I know, sometimes it's necessary, but if you could have a charger in the garage, that's a lot better idea.

    If the charging system checks out, and the battery is load-tested and found good, then you have a parasitic drain of some kind, and the dealer just blew it.

    MODERATOR

  • indytooindytoo Posts: 5
    edited February 2013
    Thanks for your response. The dealer had my vehicle overnight as they said they were running a test that took many hours to complete. They said that they could find no problem with the electrical systems in my car, including the battery. As insurance, I had them replace the battery anyway. I stopped by the dealers yesterday to inquire if the key door locks work even with a dead battery and they said yes. So, I will keep the portable battery pack on the floor in the back seat area. That will be very embarrasing when people ask why am I carrying that in a Cadillac. On one hand, I would tend to agree with you that the dealer blew it as far as testing and correcting the problem is concerned, however, my dealer is a very old dealer and the only one here in Indy so I would think that their knowledge and background on these problems would be second nature to them. As well, as I would think that as common a problem as this seems to be, I would think that the factory would have determined the problem and issued a tech bulletin for correcting the problem by now. They have had about 7 years to work on the problem. Am I in left field on this issue? I might add that I really like this 06 Cadillac and think that it is a tremenous vehicle.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,403
    There is this TSB:

    TECHNICAL

    Bulletin No.: 09-08-50-017B

    Date: February 11, 2010

    Subject: No Crank, No Start, Discharged or Low Battery (Reprogram Rear Heated Seat Module)

    Models:
    2006-2010 Cadillac DTS
    Built Prior to February 2, 2010

    Condition

    Some customers may comment about a no crank/no start condition or a discharged or low battery.

    Note
    This condition may be intermittent, therefore it is important to check if a revised calibration has been released on TIS2WEB for this concern, even if the condition cannot be duplicated at the dealer.
    Cause

    This condition may be caused by the rear heated seat module (RHSM) discharging the battery by keeping the serial data bus active, which creates a cumulative continuous draw of four amps on the battery after the vehicle is shut down, until the state of charge reaches three volts.

    Correction

    Important
    DO NOT replace the RHSM or the battery for this concern.
    Reprogram the RHSM with the latest software calibration.

    Important
    Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes.
    A revised calibration has been developed to address this condition. Technicians are to reprogram the RHSM using the Service Programming System (SPS) with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI.

    When using a Tech 2(R) or a Multiple Diagnostic Interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

    During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R) PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

    MODERATOR

  • I will print out this information and take it to the dealer next week and see what kind of response I get. The service statement that I received only indicated that an "Electrical system check was made and found everything checked out fine. Used GR8 to test battery; battery passed, installed 88865253 : 79PS Battery". I don't know whether that has any meaning or not other than what was stated. The service writer indicated that they had had cases of this problem but did not seem to provide any sense of reliability or processes as to any fixes. Perhaps they did reprogram the RHSM indicated in the TB, and did not indicate so on the service statement(?). The service writer did not indicate that it was done. I will find out about that also. Again, Thanks for your help and concern. Jim
  • gmcustsvcgmcustsvc Posts: 4,055
    indytoo,
    Keep us posted on your visit to the dealership! We're available to you should you want any assistance in the process. Contact us at socialmedia@gm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation).
    Sarah, GM Customer Service
  • indytooindytoo Posts: 5
    edited February 2013
    Stopped at the Dealers today and discussed issue with the Service Writer. Asked her if she knew if the RHSM had been reprogrammed with the latest software available on TIS2WEB as cited in #87. She drew a blank. She pounded on here keyboard for a while and said she could find nothing in regard to any reprogramming. I did not have the number with me to give to her at that time. She asked if I could get a copy and I said I would see what I could do. I see an instruction "Bulletin No. 09-08-50-017B" and the TIS2WEB listed. Are these GM documents or outside party items? It seems to me that if they were GM's, they would be readily available to dealer service departments. Please advise.
    Jim
  • I just had that problem , except it happened to me , while I was doing a HID got light kit to it, after installing all lights , tried to start car and nothing all dash light worked , all interior lights worked , doors would lock and unlock but no horn would sound and remote start wouldn't work , head light or fogs not working but marker lights and turn signals worked, message display said service airbag system, after putting all factory stuff back together and re installing bumper , everything worked like nothing ever happened .
  • So what was it? My 06 is doin the exact thng ... I ws told all fuses good strter good battery good got remote key programd ..
  • indytooindytoo Posts: 5
    edited October 2013
    In my case, I received no response as to the cause since they had no causitive reason, nor did I receive any mechanical correction to the problem. I will say that fortunately this is the only time this has happened to date. Since this situation can happen at any time and anywhere, I purchased a backup battery pack which I carry at all times on the floor of the rear seating area. Don't put it in the trunk since you can't open the trunk without power. Cadillac has really dropped the ball on this one.
  • theforddogtheforddog Posts: 1
    edited November 2013
    I also have an occasional battery discharge problem on my 2006 DTS when it is parked in the garage and not running. After several months of being a 100-mile daily driver, I quit driving it except for an occasional trip once a week or less. Then one morning when I tried to start the car the battery didn't have enough juice to turn the starter over. After couple of trips to the dealer and having them them tell me nothing was wrong with the battery, I asked the service adviser what if anything could be done to fix the problem. He explained that the car's computer could "come to life" while the car is just sitting there and now not being driven very often. He said "If you can bring it in and leave it with us for a while, we have new diagnostic equipment that can tell us what the source of the problem is". I decided not to do this because they will most likely want me to pay for an expensive piece of electronic equipment that, in my opinion, may not correct the problem in the long run. The DTS has a 150 amp alternator that will charge the battery all the way up very quickly once the engine is running. It's rated at 105 amps at idle. Just put your 10 amp charger on the battery for a couple of hours and the battery should have enough juice to turn the starter over. By the way, the service adviser told me that the new corvettes have a similar problem, and many of their owners keep a battery charger handy in the garage where they are parked at night.
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