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Cadillac DTS Electrical Issues

96 messages,  Last post on Apr 15, 2013 at 6:45 AM

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What is this discussion about? Cadillac DTS, Electrical, Sedan

Messages Page 10 of 10

#87 of 96 Re: 2006 DTS BATTERY DRAIN [caddyshack3] by Mr_Shiftright HOST

Jan 23, 2013 (7:03 pm)

Replying to: caddyshack3 (Dec 03, 2012 11:49 am)
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.

#88 of 96 Re: Dead Battery [evfilpicker] by gmcustsvc

Jan 24, 2013 (7:53 am)

Replying to: evfilpicker (Jan 23, 2013 3:35 pm)
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

#89 of 96 Re: 2006 DTS BATTERY DRAIN [caddyshack3] by indytoo

Feb 14, 2013 (7:59 am)

Replying to: caddyshack3 (Dec 03, 2012 11:49 am)
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?

#90 of 96 Re: 2006 DTS BATTERY DRAIN [indytoo] by Mr_Shiftright HOST

Feb 14, 2013 (10:50 am)

Replying to: indytoo (Feb 14, 2013 7:59 am)
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.

#91 of 96 Re: 2006 DTS BATTERY DRAIN [Mr_Shiftright] by indytoo

Feb 16, 2013 (6:56 am)

Replying to: Mr_Shiftright (Feb 14, 2013 10:50 am)
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.

#92 of 96 Re: 2006 DTS BATTERY DRAIN [indytoo] by Mr_Shiftright HOST

Feb 16, 2013 (8:17 am)

Replying to: indytoo (Feb 16, 2013 6:56 am)
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.

#93 of 96 Re: 2006 DTS BATTERY DRAIN [Mr_Shiftright] by indytoo

Feb 16, 2013 (9:55 am)

Replying to: Mr_Shiftright (Feb 16, 2013 8:17 am)
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

#94 of 96 Re: 2006 DTS BATTERY DRAIN [indytoo] by gmcustsvc

Feb 18, 2013 (7:05 am)

Replying to: indytoo (Feb 16, 2013 9:55 am)
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 socialmediagm.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

#95 of 96 Re: 2006 DTS BATTERY DRAIN [gmcustsvc] by indytoo

Feb 20, 2013 (11:10 am)

Replying to: gmcustsvc (Feb 18, 2013 7:05 am)
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

#96 of 96 Re: 2006 DTS will not start [usabravo] by cadillac1979

Apr 15, 2013 (6:45 am)

Replying to: usabravo (Sep 10, 2009 7:04 am)
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 .

Messages Page 10 of 10

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