GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

Replaced original battery with an Exide, 18 months later…

Customer Question
Replaced original battery with...

Replaced original battery with an Exide, 18 months later battery will not keep voltage if car sits for 4 days. Replaced battery under warranty from Exide, Worked for another 18 months same problem. If car is driven and only allowed to sit for 2-3 days no issues.

Mechanic's Assistant: Have you tested the battery with a voltmeter? And can you see if it's leaking or not?

Had it checked by auto store- says "good but recharged"

Mechanic's Assistant: What is the model/year of your GMC?

08 SLT w/ inline 6

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

Just charging battery & added small amount of water to it

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

Amp guage in veh shows charging just over 14 v

Submitted: 8 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 12 minutes by:
12/14/2017
GMC Mechanic: Todd M,
 replied 8 months ago
Todd M
Category: GMC
Satisfied Customers: 1,903
Experience: Technician at Montgomery Motors
Verified

Hello. My name is ***** ***** I will be assisting you today. I am actually suspecting the battery to be beginning to fail. Although, this issue also sounds like you have a parasitic drain in the system. This would explain the battery dying after a few days. In order to determine this, you will need to perform a key off amperage draw test on the vehicle. If the amperage draw of the vehicle is too high, then you will experience this battery drain. Here, I am attaching a video that will explain exactly how to perform this test in detail. I would check the amperage draw, and if it is okay, I would replace the battery with a different brand. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwi4xs3L8YnYAhXF1CYKHRzmAMEQyCkIKzAA&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DKF1gijj03_0&usg=AOvVaw2yJBqpmFgSse-49Ok_WbTe

Ask Your Own GMC Question
GMC Mechanic: Todd M,
 replied 8 months ago
If you require more information on this issue and/or are not satisfied, let me know, please, and I will attempt to assist you further on this. I hope this information points you in the right direction. If you have any further questions or concerns on this issue, feel free to ask. If you are satisfied, and have found this information helpful, a positive rating would be greatly appreciated and necessary in order for experts to receive credit for answers provided. Thank you.A positive rating does not close the session. We will still be able to communicate, and I will still continue to assist you with this issue as needed.
Ask Your Own GMC Question
Customer reply replied 8 months ago
Thanks, ***** ***** have an aftermarket alarm with remote start, which does not seem to affect anything until the battery is about 18 months old. Locked car w/o setting alarm still dies after 4 days. When battery was checked they said alternator was putting out 15.1 volts and suggested changing the current module, alternator and battery. If these items were in fact bad wouldn’t the problem occur prior to 18 months?? What brand of battery and rating would you recommend?
GMC Mechanic: Todd M,
 replied 8 months ago

I would definitely change these items, as the overcharging may cause the battery to prematurely fail. The system wouldn't begin to fail until time does it wear and damage. The alternator should be charging between 13.5v and 14.5v. 15.1 indicates an issue. Now that you mention the overcharging, the issue is likely not the battery. Although, optima is a great brand.

Ask Your Own GMC Question
GMC Mechanic: Todd M,
 replied 8 months ago

Just as a reminder, if you have found this information helpful, please, do not forget to rate the service, as it is necessary in order for experts to receive credit for answers provided. Thanks again.

Ask Your Own GMC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a gmc mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Todd M Your Own Question
Todd M
Todd M
Todd M
Category: GMC
Satisfied Customers: 1,903
1,903 Satisfied Customers
Experience: Technician at Montgomery Motors

Todd M 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:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,796 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,588 satisfied customers

GCM master tech over 25 years

Dave Nova

Dave Nova

GMC Technician

929 satisfied customers

ASE Master Certification. GM World Class Certification

Chris (aka-Moose)

Chris (aka-Moose)

GMC Technician

626 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

279 satisfied customers

18+yrs experience. State Inspector & GMC Diagnostics/Repair

JFN1

JFN1

ASE Certified Technician

270 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

228 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

< Previous | Next >

Related GMC Questions
My gmc savana wuold not start even to the point of having to
my gmc savana wuold not start even to the point of having to charge the battery a week later i tried to start it and it started rite up so i went around the block bur brought it rite back becouse it w… read more
Mechanic01
Mechanic01
3,703 satisfied customers
I have a 2012 GMC Acadia SLT. I have a brand new alternator
I have a 2012 GMC Acadia SLT. I have a brand new alternator (October 2017) and a new Battery (December 2017) but my headlights flicker. And the battery meter starts really high when I start the car. And once it's running for a while, it levels off at 13 volts. Then while driving, it goes under 13.. then spikes up near 18.. then gradually comes back down.. It jumps all over the place. And starts to make my headlights flicker.. … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
Have a 2007 awd equinox,22938 miles, servicw awd light on.
have a 2007 awd equinox,22938 miles, servicw awd light on. dealer did diag scan, repaced rear diff module, 48 hrs later light back on … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,893 satisfied customers
Alternator keeps needing replacement third one in a year.
alternator keeps needing replacement third one in a year. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Idle engine. 285000 VVM envoy 2003 XL. Also battery not
This just happened todayhvnt had a chance to do anything as yet… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
626 satisfied customers
Can a 9 month old AC Delco battery be bad even though the
Can a 9 month old AC Delco battery be bad even though the green dot is showing?Ammeter shows charging and it runs fine after a jump start plus a long drive to charge it up. A few days later it will ne… read more
Michael Dobrash
Michael Dobrash
Diesel Auto repair
10 satisfied customers
Are you working today? I have a 2003 Yukon with the
Good morning, are you working today? I have a 2003 Yukon with the strangest issues. The voltage is low. It sits around 10-13 volts, and will drop if the AC is used. This drop happens at all speeds and… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
GMC Sierra 1500 HD Classic SLT: I have a 2002 Sierra Heavy
I have a 2002 Sierra Heavy Half Ton 2X4 Supercab pickup with a 5.3L Vortec V8. This afternoon, out of the clear blue with no inkling of a problem, I found myself unable to get even a click out of the … read more
heavy_chevy_396
heavy_chevy_396
Vocational, Technical or Trade Scho
2,518 satisfied customers
GM Acadia: I have a 2009 Acadia. Took it to the dealership
I have a 2009 Acadia. Took it to the dealership for a second dead battery. They said with car off drain was 25mA and then suddenly when to 19A. Traced to passenger side foot well fuse block. They fixe… read more
Expert
Expert
GM Denali: Hi,Today "service stabilitrak" and "abs&quo
Hi, Today "service stabilitrak" and "abs" lights came on. Turns out it is the bearing that was replaced by GM one year ago. Why is it not being covered under warranty when other bearings are warrantie… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
GMC Sierre: You were such a terrific help earlier... I have
You were such a terrific help earlier... I have another question. I have an old truck w/ a camper on it. I do not use it very much, and not at all this summer. The battery is always dead. I will plug … read more
molurch
molurch
Owner
Vocational, Technical or Trade Scho
941 satisfied customers
GM GMC Envoy: 2008 . . Driving Voltage Slowly Drops
2008 GMC Envoy . . Initial Problem = Wife drove home from work, came back out an hour later, battery low and engine won't turn over . . Suspected the 6yr old battery, and had a fairly new one hanging … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Yukon Denali: Hi: My 2003 Denali sat (unfortunately
Hi: My 2003 Denali sat (unfortunately ) for approximately 2+ years (maybe 2 years, 3 months) without moving. It was recently towed (flatbed) and then towed again to a mechanic my father (not me) has b… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
8,789 satisfied customers
GMV Suburban: 1993 Suburban wont start. Battery is good. Starter
1993 Suburban won't start. Battery is good. Starter replaced 4 months ago w/ a remanufactured one. Same symptoms as before replaced-will start fine for 2-3 days and then nothing. Seems to happen when … read more
supermechanic
supermechanic
Service consultant
Vocational, Technical or Trade Scho
10 satisfied customers
GM: 1997 GMC Yukon 1500 SLT with keyless entry vehicle purchased
1997 GMC Yukon 1500 SLT with keyless entry vehicle purchased early in the model year. I store the truck in a garage with the battery disconnected via a racing style on/off switch. I use this exclusive… read more
Ridgerunnerras
Ridgerunnerras
Technical Support Engineer
Associate Degree
gmcyukon yukon: -replaced battery,alternator,serpentean belt
-replaced battery,alternator,serpentean belt battery still shows discharge on volt meter on dash board. Have had to jump start even after operating for long period of time. Have had alternator,battery… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
GMC Yukon 4x4: 2002 GMC Yukon SLE battery light starting flashing
2002 GMC Yukon SLE battery light starting flashing so i had a checkup at advance auto batt & alt test ok. when i'm driving flashing continues and all inst go flat and i barely make it home; happened t… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,588 satisfied customers
GM terrain: I have a 2011 gmc terrain w/2.4L ecotec. engine
I have a 2011 gmc terrain w/2.4L ecotec. engine warning light came on while going thru auto car wash. any suggestions. I think o2 sensor got soaked, but do not know location.… read more
Randall
Randall
Auto Technician / Consultant
Vocational, Technical or Trade Scho
69 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