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I have a 2001 cad Deville 4.6L multiple electric issues. we…

Customer Question
I have a 2001...

I have a 2001 cad Deville 4.6L multiple electric issues. we have cleaned all grounds including one by alternator.

Mechanic's Assistant: Are you fixing your DeVille yourself? What have you tried so far?

Battery drains over night, doors will lock and unlock randomly

Mechanic's Assistant: Is this your first time dealing with this issue?

Fuel gauge and blower controls or radio will go away relay cycles they come back

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Yes just got the car service traction control and service air bag flash on screen

Submitted: 4 months ago.Category: Cadillac
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Answered in 7 hours by:
3/23/2018
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago
Amedee
Amedee, Cadillac Technician
Category: Cadillac
Satisfied Customers: 28,312
Experience: ASE certified Technician advanced level specialist. Wisconsin certified emissions state inspector
Verified

Hello and welcome!

My name isCustomerand I can assist you with your question.

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Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

I apologize for the extended wait time you experienced, I've only just come online now and would like to assist you.

May I start by getting your VIN and any stored codes in the computer?

Thank you!

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Customer reply replied 4 months ago
1G6KD54Y81U185566 2001 Cadillac Deville
we have pulled all grounds and cleaned them, including the hard to get to alternator bracket ground.
no data showing on harbor freight scan tool. but quality scan tool reveals DIM BZ810
DTC0410
DTC0601
P0741Theft Deterrent displayed
Traction control light on.
SES light on.
Service air bag light on.
Battery light comes on, showing lower voltage than actual.
shows not charging but actually is.
temp display will cycle off and blower comes on. cycles on, blower goes back to normal.
Radio display will also cycle, can hear relay when it resets clock will work radio needs to be turned on again. about every 8 ten minutes
electronic gauges go out such as fuel, timed with temp display or radio. temp and radio usually at different times
Battery will intermittently drain over night, need jump to get to work 3 miles away, then a jump start to get home. other times it will sit in yard for 2 weeks and start right up.
Intermittently drivers window will not work and car wont start, if you put shift selector in reverse then back to park, door locks cycle and window works and car will start.
doors locks do not always cycle when put in park to exit vehicle, key on move to reverse then park door locks will activate.
Car running in park, door locks will cycle lock after several minutes will unlock, and continue doing so until cycled into reverse and back to park.
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

Hell and thank you for that information. Would you like a test to help pinpoint the root cause of this battery draw?

I would check those circuits that are acting up. Blower motor, radio etc..

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Customer reply replied 4 months ago
draw only occurs when doors have not cycled. I was in hopes the Ground would have fixed everything, but did not. I do not want o just throw parts at it. thought maybe it was worth asking some one that works with these a lot. I was going to pull up wiring schematic to see where all these components come together. it would appear that by putting car into reverse it allows a ground or power wake up to another component. the DIM, the Body control module and RIM are all suspect in my mind, just haven't looked to see which control affects which problem.
Customer reply replied 4 months ago
I am going to replace the front ground regardless That I have cleaned it at this point, that cant hurt, a quick forum search, everybody says that fixes a lot of these problems. whats nice is its easy to duplicate as it is becoming more prominent.
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

Hello!

YES, this is fairly common.

Would you be willing to speak on the phone?

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Customer reply replied 4 months ago
I am in the office by myself right now. Hard to take a call
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

Ok no problem. I can wait until your off of work. No hurry on my end.

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Customer reply replied 4 months ago
ok thank you....
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

Your welcome

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Customer reply replied 4 months ago
only advice is to call and spend another $26 ?
Cadillac Mechanic: Amedee, Cadillac Technician replied 4 months ago

I can lower the cost of the phone call down if cost is an issue.

However, I will be more than happy to assist you on this page. It will just take longer and may be a bit more complex via chat so it is up to you.

Personally, I think we would be get to the problem much faster over the phone. But again, it is up to you. I will be happy to help either way.

Let me know so we can continue which ever way you decide.

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