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The engine starts and stops running after 10 to 20 seconds.
The engine starts and stops running after 10 to 20 seconds. A voltage meter shows 14 volts and increases up to over 18 volts when the engine quits. … read more
Roy
Roy
shop foreman
Associate Degree
4,481 satisfied customers
I have 2009 Yukon Hybrid. Started today and "service battery
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. An… read more
BOBBYSS
BOBBYSS
Automotive Repair/Damage Investigator
Associate Degree
14,567 satisfied customers
I have a 2000 GMC Sierra 1500 5.3l. It does not charge. I
I have a 2000 GMC Sierra 1500 5.3l. It does not charge. I replaced alternator and cleaned all cables. Still doesn't work. I asked another mechanic about it and he said computer. Gave me a wire to chec… read more
Jared D
Jared D
Shop Supervisor
Bachelor's
2,327 satisfied customers
Have a charging issue. start engine, alternator is cranking
have a charging issue. start engine, alternator is cranking out 14.5 volts. within a minute or two it starts to put out less and less volts until i am completely running on the battery in about 10 min… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
6,458 satisfied customers
I have a 2000 gmc k2500, 5.7 liter. Dual battery setup I
I have a 2000 gmc k2500, 5.7 liter. Dual battery setup I believe was installed with snow plow when truck was new. Truck would not turn over the other day. Long story short, I have two new batteries, (… read more
Mike S.
Mike S.
Vocational, Technical or Trade Scho
8,022 satisfied customers
I have an 03 GMC 2500Hd with the 6.6 duramax.....Sunday I left
I have an 03 GMC 2500Hd with the 6.6 duramax.....Sunday I left the house and went fishing ...when I returned to my truck both batteries were completely dead...I purchased 2 new batteries. I drove home… read more
Jared D
Jared D
Shop Supervisor
Bachelor's
2,327 satisfied customers
GMC Sierra 1500 Classic SLE: 2011 GMC Sierra SLE, just changed
2011 GMC Sierra SLE, just changed my 4yr old battery. know my dash gauge bounces from 12v to 14.5v while I'm driving. what could that be?… read more
GM Bob
GM Bob
Automobile Technician
High School or GED
1,080 satisfied customers
2003 GMC Sierra 5.3 V8. Message center reads "battery not
2003 GMC Sierra 5.3 V8. Message center reads "battery not charging" and battery icon pop on/off with "odometer". Voltage meter reads 14+ always. Drove me nuts so I had alternator changed. Voltage outp… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
Good day. I have a 2007 GMC Yukon that is having a similar
Good day. I have a 2007 GMC Yukon that is having a similar issue with lights flickering at idle. Headlights, tail lights , license plate lights interior lights any insight would be helpful thanks… read more
Michael Moore
Michael Moore
Team leader, bumper to bumper tech.
Associate Degree
2,870 satisfied customers
G M C Safari van: The electrical output starts at 12 volts
The electrical output starts at 12 volts and the vehicle runs for 1 or 2 miles and warning lights come on and the vehicle stops… read more
Virtual Wrench
Virtual Wrench
Owner of LJ Auto Repair 37 years
Associate Degree
14,398 satisfied customers
GM Envoy: The speakers in my 2007 GMC Envoy go in and out..
The speakers in my 2007 GMC Envoy go in and out.. they either all work or only the front speakers by the windshield only work. I am wondering how to fix this problem if this is an easy self repair or … read more
Don - Mo Lurch
Don - Mo Lurch
Owner
Vocational, Technical or Trade Scho
10,644 satisfied customers
GMC Sierra 2500HD: 2002 gmc duramax diesel. Alternator pulls
2002 gmc duramax diesel. Alternator pulls 60amps @ 15.5 volts continuously, illuminating red warning light in dashboard. Brand New Batteries fully charged. Brand New 105 amp alternator installed. Whil… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,107 satisfied customers
GMC Sierra 2500 HD Classic SLE: I have a 2007 GMC 2500HD Extended
I have a 2007 GMC 2500HD Extended Cab pickup truck with a Duramax Diesel engine and Allison tranny. I am getting a message "BATTERY NOT CHARGING" on my dash message center, and the gauge shows around … read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
929 satisfied customers
GMC Yukon XL 1500: My 2007 gmc yukon has a electrical problems.
My 2007 gmc yukon has a electrical problems. The alt. Gauge goes to 12 volts dash lights go out, seems to run ok but a little latter it goes back to 14 or a little bit more. Then repetes itself.… read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
19,495 satisfied customers
GMC Sierra 2500 HD SLT: I have a 2008 GMC Sierra 2500HD LT
I have a 2008 GMC Sierra 2500HD LT with a 6.0L engine in it. It is equipped with the factory trailer package including trailer brake controller. The trailer brakes were working just fine until I messe… read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
925 satisfied customers
GMC Sierra 3500: i have a 1994 gmc sierra 3500 4x4 crew cab
i have a 1994 gmc sierra 3500 4x4 crew cab 6.5L turbo diesel we just changed a head gasket and glow plugs on drivers side the truck starts and runs fine then will just shut off like i turned the key b… read more
John
John
MASTER AUTOMOTIVE TECHNICIAN
2 YEARS COLLEGE
8,101 satisfied customers
On the schematic you sent it states generator. Is this just
On the schematic you sent it states generator. Is this just a generic term even if the vehicle has an alternator? Also, I should have remembered this in the beggining, fuel gauge circut. Let me explai… read more
Virtual Wrench
Virtual Wrench
Owner of LJ Auto Repair 37 years
Associate Degree
14,398 satisfied customers
GM C 10 pickup: I have a 1985 gmc pickup with a 350 v8. I
I have a 1985 gmc pickup with a 350 v8. I am having problems with the charging system. One mechanic had me buy a new battery. By the time the problem resurfaced, I was out of town. The mechanic I went… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,823 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

1,589 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

675 satisfied customers

16 years of experience

Ron Z.

Ron Z.

- GMC Tech -

285 satisfied customers

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

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

George H.

George H.

ASE MasterTechnician

230 satisfied customers

15+ Years ASE Master Technician with Level 1 Certification

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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.

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