Cadillac

Cadillac repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 2005 STS and just recently changed the alternator…

Customer Question
I have a 2005...

I have a 2005 STS and just recently changed the alternator and battery is only 3 months old. Had it recharged. The car will start right up but while driving, the doors will lock and unlock. The car will also die while driving but will start right back up.

Mechanic's Assistant: Have you changed a battery before?

Yes New AC Delco battery

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

Yes we are, we have only replaced the battery and Alternator today. Had codes read also today.

Submitted: 22 days ago.Category: Cadillac
Show More
Show Less
Ask Your Own Cadillac Question
Answered in 10 minutes by:
5/28/2018
Cadillac Mechanic: Danny, ASE Certified Technician replied 22 days ago
Danny
Danny, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4,474
Experience: ASE Master Technician with L1 advanced engine performance, VW Certified, former US Army mechanic
Verified
Are the dash lights cutting in and out while you're driving as well?
Ask Your Own Cadillac Question
Customer reply replied 22 days ago
No just dim like it's not getting enough juice.
Customer reply replied 22 days ago
Also, it would turn the navigation off but now the navigation won't even come on like it blew a fuse in it.
Cadillac Mechanic: Danny, ASE Certified Technician replied 22 days ago
I think you need to get a voltmeter and check charging system voltage both with the loads off and loads on. The vehicle should be out putting out low to mid 14 volts with nothing on, and mid 13 volts with as many electrical consumers as you can find on. I would not diagnose navigation concern at this point because when you get low voltage situations the module stopped communicating properly over the can bus which is the controller area network communications bus that modules use to pass sensor values and running conditions between each other.
Ask Your Own Cadillac Question
Customer reply replied 22 days ago
Ok, I will just have to take it to shop this upcoming week. Thanks
Cadillac Mechanic: Danny, ASE Certified Technician replied 22 days ago
You can buy a voltmeter for like 10 to $15 on Amazon and then check this yourself to avoid $100 diagnosis fee, m more likely just a bad alternator or you have an issue with the connections at the battery.
Ask Your Own Cadillac Question
Customer reply replied 22 days ago
I'm thinking it my connection at the battery. We just put a new alternator on this morning with a freshly charged battery. The battery is only 3 months old but needed to be recharged due to the bad alternator we took off.
Cadillac Mechanic: Danny, ASE Certified Technician replied 19 days ago

I don't doubt it, again, that's why I keep trying to get you to spend the 10 dollars on a voltmeter so we can test it.

https://www.youtube.com/watch?v=fDdgs5bqzZg

I made that video for my youtube channel which is strictly about German cars, except the majority of the video is applicable to this. IF you want to stop throwing parts at the car and actually fix it I'd suggest you purchase a 1 dollar meter and do the described tests. You're patching symptoms most likely, and not fixing the actual concern. You'll continue in this infinite loop if you don't make sure your wiring and things are ok. It's SO EASY to test the wiring, you can tell EXACTLY where the problem is and not guess. Alternators die because of being stuck in high output mode due to voltage drops over the negative and positive harnesses, as well as faulty batteries (which is caused by undercharging).

I want to take a minute to explain how this site works.

We work from our cell phones, shops, homes, etc to help people fix their cars. Recently the site added a membership feature for our customers to get more questions for less money. Unfortunately it has caused confusion with some customers who think that because they've become members or payed a deposit, they don't need to rate or accept our answer.

If you don't accept the answer, we don't even get an hourly wage, and because of the memberships, I have seen my accept percentage fall by almost half.

You're completely covered by both your credit card, and you can put in for a refund if I can't work out a successful solution to your problem. Please remember to hit accept, the site is getting paid but a lot of us experts are not getting our cut of correctly answered questions because of confusion about the site.

You can still come back later and ask follow up questions if necessary on this page even after you hit accept, but if you
leave to fix the vehicle and don't return in time, it will time out, the site keeps your money, and even though I was right, I get nothing.

Ask Your Own Cadillac Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a cadillac mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Danny Your Own Question
Danny
Danny
Danny, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 4,474
4,474 Satisfied Customers
Experience: ASE Master Technician with L1 advanced engine performance, VW Certified, former US Army mechanic

Danny is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Jerry Newton

Jerry Newton

Cadillac Technician

1,569 satisfied customers

ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.

Dave Nova

Dave Nova

Cadillac Technician

1,522 satisfied customers

ASE Master Certification. GM World Class Certification

Gm Tech (Cam)

Gm Tech (Cam)

Cadillac Mechanic

1,003 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

John

John

ASE Certified Technician

941 satisfied customers

ASE CERTIFICATIONS A1-A8 & L1 / 40 YEARS AUTOMOTIVE EXPERIENCE

George H.

George H.

ASE Certified Technician

775 satisfied customers

ASE Master Tech 15+ Years

Chris (aka- Moose)

Chris (aka- Moose)

Cadillac Technician

744 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Cadillac Technician

690 satisfied customers

GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

< Previous | Next >

Related Cadillac Questions
Check out and or replace the alternator on a 2000 Cadillac Deville?
How do you check out and or replace the alternator on a 2000 Cadillac Deville?… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
1989 Cadillac: The alternator is not getting power..clip..tested good
I have a 1989 Cadillac Brougham The alternator is not getting power from the wire that has the clip on it. The battery has tested good, alternator is new, tested that wire and it has no power. Any sug… read more
JHoop
JHoop
Owner,Technician
High School or GED
Cadillac cts: I got the service charging system and electrical
I got the service charging system and electrical system message car died replaced battery, alternator and now when i turn the key it just clicks… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Alternator and battery have been replaced, but battery
Alternator and battery have been replaced, but battery becomes drained won't run. Napa test shows 13.5 volts being produced. Excessive arc when battery being hooked up. … read more
Gm Tech (Cam)
Gm Tech (Cam)
Cadillac Mechanic
Vocational, Technical or Trade Scho
1,003 satisfied customers
2006 Cadillac dts Alternator died. Could not turn off car,
2006 Cadillac dts Alternator died. Could not turn off car, ended up disconnecting battery cable...battery is dead too now. Replaced alternator and car started 2x. Checked fuses and no errors on dash d… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 2005 STS and just recently changed the alternator
I have a 2005 STS and just recently changed the alternator and battery is only 3 months old. Had it recharged. The car will start right up but while driving, the doors will lock and unlock. The car wi… read more
Danny
Danny
ASE Certified Technician
4,474 satisfied customers
I recently had my alternator and belt replaced. The person
I recently had my alternator and belt replaced. The person who replaced it damaged my heater control valve. So I found that part but there is a hose that connects to it and I can't find the name of th… read more
Danny
Danny
ASE Certified Technician
4,474 satisfied customers
What tools do I need to remove the alternator from 2000
What tools do I need to remove the alternator from 2000 Seville sls … read more
Adam Legler
Adam Legler
Service Advisor, Master Technician
30 satisfied customers
I just changed the alternator in my 08 sts because the car
Hello I just changed the alternator in my 08 sts because the car would not start and it was telling the battery was not holding a charge, the car was switching to battery saver mode... Now that the al… read more
HDGENE
HDGENE
Master Technician/Lead Technician
Associate Degree
2,835 satisfied customers
Won't start. The battery is good. Alternator is fine as
Alternator is fine as well. Also had the starter checked out. My security light keeps flashing … read more
Jerry Newton
Jerry Newton
Cadillac Technician
Vocational, Technical or Trade Scho
1,569 satisfied customers
Coolant leaking on right side of engine above alternator. It
Coolant leaking on right side of engine above alternator … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Is there a fuse for the alternator on a 94 Cadillac deville
Is there a fuse for the alternator on a 94 Cadillac deville 4.9L … read more
Chris (aka- Moose)
Chris (aka- Moose)
Cadillac Technician
Vocational, Technical or Trade School
744 satisfied customers
1999 CADILLAC DEVILLE: Service Charging System..dim..jump..locks
1999 CADILLAC DEVILLE WONT CHARGE OR START for long While driving appears on the dash that says "Service Charging System, Battery Not Charging" and car power starts to go dim and at a new green light … read more
John
John
ASE Certified Technician
2 YEARS COLLEGE
941 satisfied customers
1991 cadillac: electrical problems..replaced battery..sits..fuses.
electrical problems Have replaced battery 3 times, when my 1991 cadilac brougham sits for 2 days the battery is dead. what can I do. where are fuses.… read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
How much does it cost to replace an alternator on the Escalade.
How much does it cost to replace an alternator on the Escalade.… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
My 2000 Cadillac Escalade constantly has a dead battery. We
My 2000 Cadillac Escalade constantly has a dead battery. We have changed the battery several times and taken it to the dealer. They say there is a short somewhere but they can't find it. I find that a… read more
Matt J
Matt J
Owner of Jones Automotive
Vocational, Technical or Trade Scho
1,000 satisfied customers
escalade: MY 2005 caddy..battery light came..What made the light come
MY 2005 caddy escalade battery light came on last night returning from dinner...I started the car this morning and the light never came back on so far. What made the light come on?… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 satisfied customers
Battery No Charge but the car starts..steering
The information bar says "Battery No Charge" but the car starts. However, the steering is gone. What's wrong? Just this week replaced drivers front wheel hub bearing and serpentine belt tensioner… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x