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2017 GMC Denali duramax doesn't show how much deff left but
2017 GMC Denali duramax doesn't show how much deff left but still tells you it's ok but not the level of fluid … read more
BRIAN
BRIAN
Program Coordinator/Professor Automotive
BS
341 satisfied customers
I put new batteries in them and they still do not come on at
I put new batteries in them and they still do not come on at all. … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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I have a 2014 GMC 2500HD (Denali) that I use to two a 30'
I have a 2014 GMC 2500HD (Denali) that I use to two a 30' 5th wheel. The trailer has electric over dick brakes and the truck software would not work with the trailer. I ended up installing an after ma… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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I have a flooded gmc sierra 1500 denali crew cab 2017, i'm
i have a flooded gmc sierra 1500 denali crew cab 2017, i'm looking to test all my electronic modules to see if it can be repair rather buying new. i heard there are places i can send my ecms, bcm, etc… read more
Dan
Dan
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Power door locks don't work, I can hear the unlock relay
power door locks don't work, I can hear the unlock relay clicking … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
I have a 2017 Yukon Denali XL with the check engine light on
I have a 2017 Yukon Denali XL with the check engine light on and 1 mechanic ran the diagnostics and said it was something to do with a seal or cover with the oil something or other. I trusted him and … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
19,751 satisfied customers
Truck has run perfect until a month ago. All of a sudden it
Truck has run perfect until a month ago. All of a sudden it will not start, all dash lights go on including the service engine light, which only goes on when this happens. New battery, new ignition st… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
33,175 satisfied customers
I am working on my 2007 GMC Yukon Denali have been having a
I am working on my 2007 GMC Yukon Denali have been having a lot of issues with stabil track light going off have had to a repair shop they did multiple things have not figured it out yet but now as of… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
766 satisfied customers
The ECM was "flashed" at the GMC dealer. I just replaced the
The ECM was "flashed" at the GMC dealer. I just replaced the throttle body with new and still have the problem.… read more
Chris (aka-Moose)
Chris (aka-Moose)
GMC Technician
Vocational, Technical or Trade School
766 satisfied customers
Got a service suspension system light on my 2007 Denali.
got a service suspension system light on my 2007 Denali. What does this mean??? and what is normally done to service the air shocks?? … read more
Ron
Ron
Automotive Tech
Vocational, Technical or Trade Scho
39,512 satisfied customers
I have a 2007 GMC Yukon XL Denali w/6.2 liter Vortec.It has
I have a 2007 GMC Yukon XL Denali w/6.2 liter Vortec.It has 125K Mi. At idle, the oil pressure gauge goes down to the red zone when the oil is at operating temp. We use Valvoline Max Life semi synthetic 5-30. Recently while towing our camper trailer up a pass, we were running at around 5500 RMPs and the low pressure warning came on just as we hit the top of the pass. It then stopped sounding and was not heard again on the trip of over 200 miles. I did not hear any valves clattering. My GMC dealer took it in and says it needs a new oil pump as their external pressure gauge reads that it is around 8 PSI at idle with warmed up oil, and it should be closer to 20 PSI. This same dealer installed an oil pump about 18 months ago for the same reasons. They do not have an explanation as to why the oil pump has failed after 25K miles. Any ideas? … read more
Tim Mohr
Tim Mohr
SHOP OWNER
Master's Degree
17,365 satisfied customers
GMC Yukon Denali: hi dave i have a question i have a 2001 gmc
hi dave i have a question i have a 2001 gmc yukon denali 6.0 the transfer case has to be replace… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Yukon XL 1500 Denali: Hi I have had a new ac compressor
Hi I have had a new ac compressor sent over from the US to Australia for my 2004 GMC Yukon denali but it has arrived with four grooves on the compressor and the serpitine belt is six and my mechanic s… read more
Roy
Roy
shop foreman
Associate Degree
5,211 satisfied customers
I have a 2006 GMC Yukon XL Denali with 180K miles and a
I have a 2006 GMC Yukon XL Denali with 180K miles and a temporary knocking problem. I crank car from cold start, drive 3 miles @ 45mph to the interstate (70mph) and about 2 miles later, it sounds like… read more
sprinkles08
sprinkles08
Technician
High School or GED
18,927 satisfied customers
GMC Sierra Pickup Denali: I have a 2013 GMC Denali. According
I have a 2013 GMC Denali. According to the infotainment manual I should be able to download audio-books from audible.com onto a usb drive and record from the usb to the HDD in the truck. The book begi… read more
Pete
Pete
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General auto certifications
33,175 satisfied customers
GM Yukon Denali: I have a 2004 Yukon Denali. For a few years,
I have a 2004 Yukon Denali. For a few years, it was confused on whether to change from 3rd into drive. Well now, it won't change from 2nd gear. Is this a computer problem? Or, worse… read more
Pete
Pete
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GMC Yukon XL 1500 Denali: My GMC Yukon XL Denali is with a
My GMC Yukon XL Denali is with a mechanic and i have just been informed that the transfer case is bad. Does the entire transfer case need to be replaced? or can the parts inside be replaced individual… read more
Dave Nova
Dave Nova
GMC Technician
Associate Degree
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GM Yukon: my Yukon hybird makes a noise that sounds like a
my Yukon hybird makes a noise that sounds like a motor running the window up and down what could this be?… read more
Jerry
Jerry
Service consultant
Vocational, Technical or Trade Scho
13,108 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

31,023 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

766 satisfied customers

16 years of experience

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Don - Mo Lurch

Don - Mo Lurch

ASE Certified Technician

248 satisfied customers

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

Mike S.

Mike S.

ASE Certified Technician

241 satisfied customers

GMC N.A.I.S.E. Certified Auto-Mechanic

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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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