GMC

GMC troubleshooting questions? Ask a mechanic for answers

Ask an Expert,
Get an Answer ASAP!

I have 2009 Yukon Hybrid. Started today and "service battery…

Customer Question
I have 2009 Yukon...

I have 2009 Yukon Hybrid. Started today and "service battery charging system and service power steering warning came on? I had 11.91 at the battery while running and 12.21 when the vehicle was off. Any thoughts?

Mechanic's Assistant: When was the fluid last checked? Have you heard any whining noises while turning the wheel?

No noises. I'll check the fluid right now.

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

I'd like to narrow it down. I have re-seated the fuse block. It looks brand new, no corrission.

Submitted: 10 months ago.Category: GMC
Show More
Show Less
Ask Your Own GMC Question
Answered in 6 hours by:
9/24/2017
GMC Mechanic: FIX IT MAN, Master Technician replied 10 months ago
FIX  IT MAN
FIX IT MAN, Master Technician
Category: GMC
Satisfied Customers: 17,611
Experience: Master Automotive Technician
Verified

Hello, my name is***** need more power than that at the battery when running. If you do not then these warnings will come on due to the lack of available voltage. It sounds like the generator is not putting out the correct amount of voltage.

Ask Your Own GMC Question
Customer reply replied 10 months ago
battery measured 11.84 while running. voltage went up to 12.3 after it was shut off.
GMC Mechanic: FIX IT MAN, Master Technician replied 10 months ago

With the engine running the battery voltage should be close to 14 volts as the generator should be charging it.

Ask Your Own GMC Question
Customer reply replied 10 months ago
Is it the generator or a short at the steering motor
Customer reply replied 10 months ago
Where is the generator and how can I test it?
GMC Mechanic: FIX IT MAN, Master Technician replied 10 months ago

A short in the steering motor would not cause this. It would blow a fuse. In the hybrid model the generator is located inside of the transmission bell housing.

Ask Your Own GMC Question
Customer reply replied 10 months ago
how can I test it?
GMC Mechanic: FIX IT MAN, Master Technician replied 10 months ago

You would need to test the voltage at the battery. If the voltage of the battery does not increase to 14 volts with the engine running then turn on all of the electrical in the vehicle to see if it increase. If it still does not then it has more than likely failed. There is no way to test the generator with standard tools. You would need to monitor its output with a factory style scan tool. It is possible that you have a bad amp sensor on the negative battery cable if it is equipped with one. You would be able to see if it is reading correctly with a scan tool also.

Ask Your Own GMC Question
Customer reply replied 10 months ago
where would the amp sensor be?
GMC Mechanic: FIX IT MAN, Master Technician replied 10 months ago

It is located on the negative battery cable near the battery. Not all models have one.

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 FIX IT MAN Your Own Question
FIX  IT MAN
FIX  IT MAN
FIX IT MAN, Master Technician
Category: GMC
Satisfied Customers: 17,611
17,611 Satisfied Customers
Experience: Master Automotive Technician

FIX IT MAN 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
I drove my truck from work to get lunch and on my way back I
I drove my truck from work to get lunch and on my way back I went to turn the engine over and it turned over but started making a weird clunky noise and then shut off I tried turning it over again and… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
We have C0895 fault code on our 2011 GMC Yukon HYBRID. Could
We have C0895 fault code on our 2011 GMC Yukon HYBRID. Could you please help me to solve this problem ? … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I just bought a 2008 GMC Yukon with 146k miles but each day
I just bought a 2008 GMC Yukon with 146k miles but each day I have jump start the battery. The mechanic of the dealer I bought the truck from claims he changed the battery twice and has checked the al… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
Stabilitrak service light and abs light both on, service
nothing so far- just started looking- it has only come on one time before and stopped- this time didn't want to go into gear but then did and is working fine- lights still on though … read more
Gunvir Singh
Gunvir Singh
1,949 satisfied customers
I have a 2005 GMC Yukon Denali that I bought new in 2005.
I have a 2005 GMC Yukon Denali that I bought new in 2005. Starting in about 2009, sometimes It will not start, all of the lights/gauges/etc come on but I have to try the key 3 or 30 times before the e… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
My 2008 yukon SLT has an intermittent vibration during idle
My 2008 yukon SLT has an intermittent vibration during idle and sometimes during braking but only at slow speeds. I've recently had the front rotors replaced and checked however that did not solve my … read more
Ivan Alvarez
Ivan Alvarez
Lead technician
190 satisfied customers
I have a brand new 2016 Yukon Denali. There is a rattle in
I have a brand new 2016 Yukon Denali. There is a rattle in back that sounds like it's coming from the 3rd row. Are you familiar with this issue? It's driving me crazy.… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
626 satisfied customers
Gmc Yukon hybrid: My 08 yukon hybrid lost power while driving
My 08 yukon hybrid lost power while driving and said reduced power. When giving gas it reved like trans was slipping. Pulled over and started slow, could get moving as long as you did not push the gas… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2003 Yukon Denali with 240,000 miles..When I bought
i have a 2003 Yukon Denali with 240,000 miles..When I bought it had 38,000 miles and intermittent "Service Air suspension" that Selling GMC Dealer said was Computer glitch..Must have be en cause suspe… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
This morning I noticed the bluetooth in my 2010 Yukon XL stopped
This morning I noticed the bluetooth in my 2010 Yukon XL stopped working. I hold the steering wheel control button down and the system does not engage. It is not the button, a quick press, still mutes… read more
RandyNetwork Tech
RandyNetwork Tech
1,756 satisfied customers
GMC Yukon SLT: 1996 GMC Yukon / 4dr SLT / 4wd - ignition fuse
1996 GMC Yukon / 4dr SLT / 4wd - ignition fuse (20amp) keeps blowing .... have had issues with with alarm system,,,, There is a kill switch i recently noticed had a bad connection to the alarm.. i res… read more
molurch
molurch
Owner
Vocational, Technical or Trade Scho
941 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
2013 Yukon Denali (Hybrid) While driving with the rear
2013 Yukon Denali (Hybrid) While driving with the rear passenger bucket seat folded down my wife noticed a burning smell so she pulled to the side of the road. She found the burning smell was coming f… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Yukon: I have a 2004 GMC Yukon--we bought it new, 2 years
I have a 2004 GMC Yukon--we bought it new, 2 years ago while driving, the sensor ( Red battery with a X through it) came on and a warning that "battery Not Charging". We had the alternator replaced an… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 satisfied customers
GM Yukon XL: Hi, My 2003 Yukon xl was parked on a steep bank
Hi, My 2003 Yukon xl was parked on a steep bank (maybe 25-30 degree slope) and in idle when it stalled after sitting there a couple minutes. Gas had been near empty but not in danger of running out. W… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Yukon: My 1999 GMC Yukon ran fine yesterday. Today, at
My 1999 GMC Yukon ran fine yesterday. Today, at noon, my wife went to crank it. When she opened the door, she heard a clicking noise coming from under the dash in the vicinity of the steering wheel. S… read more
Canadafix
Canadafix
Auto shop owner
Vocational, Technical or Trade Scho
869 satisfied customers
GM Yukon XL: I have a 2003 Yukon XL and the Service Brake Booster
I have a 2003 Yukon XL and the Service Brake Booster message warning just started flashing after start up. Oddly enough, the Battery not Charging warning started coming up (with the battery light) abo… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Yukon SLT: TODAY MY 2003 GMC YUKONS DRIVER SIDE POWER SEAT
TODAY MY 2003 GMC YUKONS DRIVER SIDE POWER SEAT QUIT OPERATING ALONG WITH THE HEATED SEATS ON BOTH THE DRIVER AND PASSENGER SIDE. SEE NOTHING ELSE WRONG OTHER THAN THAT ANY IDEAS? MAYBE A FUSE?… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,796 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