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Seems that on my 2018 GMC Denali SLC my rear parking assist,
Seems that on my 2018 GMC Denali SLC my rear parking assist, etc. are off. I tried activating the P button and the light does not come on. What should I do? … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,968 satisfied customers
2018 gmc 3500, both blinkers (the yellow ones) both wont
2018 gmc 3500, both blinkers (the yellow ones) both wont blink, they are both illuminated but wont blink, stopped around the same time my remote starter also stopped workin … read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
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My running lights do not work- none of the running lights-
second opinion] My running lights do not work- none of the running lights- but front headlights and parking lights do come on. GMC 3500 Denali 2015. All turn signals work.Found this problem when conne… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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I replaced window regulator on a 2015 GMC sierra 3500 Denali
Hello I replaced window regulator on a 2015 GMC sierra 3500 Denali and worked good for like 5 min, now window is down and will only go up 1/4 of the way and bumps up and down? … read more
Ron
Ron
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Vocational, Technical or Trade Scho
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2018 gmc cutaway van. Aldl doesn't work. Gushes don't work.
2018 gmc cutaway van. Aldl doesn't work. Gushes don't work. Truck will not start. … read more
Amedee
Amedee
Automotive Consultant
Vocational, Technical or Trade Scho
21,359 satisfied customers
Trailer Park lights not working. Brakes yes. Parking lights
Trailer Park lights not working. Brakes yes . JA: Just to clarify, what are the exact lights you're talking about? Customer: Parking lights on trailer. JA: What is the model/year of your GMC? Customer… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Quadrasteer 4 wheel steer light not on, on the module on
Quadrasteer 4 wheel steer light not on, on the module on dash … read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
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I have a 2011 gmc denali. I just swapped out the brake
I have a 2011 gmc denali. I just swapped out the brake switch to fix an intermittent cruise issue and now the brake lights don't work … read more
R Clark
R Clark
Senior Police Mechanic
Associate of Occupational Studies
220 satisfied customers
Engine died after driving 45 minutes pulling a camper. got
engine died after driving 45 minutes pulling a camper. got towed off the freeway. engine started about 20 minutes later and drove fine back home. coolant temp was rising and turned off ac. still rose,… read more
Ethan Lankford
Ethan Lankford
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Yesterday while driving all guages were going in and out
yesterday while driving all guages were going in and out then staopped working. Door locks were locking and unlocking. Engine was running in lower gear while in drive. After stpped re-started with no … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
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2016 GMC Yukon Denali won't crank. When I press the button
2016 GMC Yukon Denali won't crank. When I press the button nothing happens but the yellow engine light on the left comes on???? … read more
Todd Audette
Todd Audette
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Vocational, Technical or Trade School
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Brakes, turn signals, everything works minus running tail
brakes, turn signals, everything works minus running tail lights on 2007 yukon denali … read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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Can't get it to start. New battery. All electrics are good.
Can't get it to start. New battery. All electrics are good. Suspect anti theft logic is not letting car start. Seat heaters do on work. Checked ign.3 fuse and it was good. … read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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I have a '10 Yukon XL Denali with 135K miles. I slowed to a
I have a '10 Yukon XL Denali with 135K miles. I slowed to a stop sign, towing a trailer, on my way to refuel with about 1/8 tank. Motor shut off when I stopped and wI'll crank over but not turn back o… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
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GMC Yukon Denali: hi 2000 denali and hazards work but no turn
hi 2000 denali and hazards work but no turn signals changed the switctch but still nothing what can it be… read more
Gary
Gary
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Vocational, Technical or Trade Scho
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yes: I have a 2007 yukon denali with a left headlight that will not t
yes: I have a 2007 yukon denali with a left headlight that will not turn on. I have replaced the bulb. the bulb is good. before the original bul went out there was aome occasional flickering left head… read more
Pete
Pete
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General auto certifications
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GM Sierra Denali Pickup: I have GMC Sierra Denali 03 I believe
I have GMC Sierra Denali 03 I believe it has 5.7L Put new battery,starter.and ignition switch in. Truck will start if engine is cold but when eng. gets hot and I turn it off does not start again. From… read more
Chris (aka-Moose)
Chris (aka-Moose)
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GMC Envoy Denali: how do I get my gear shift on my 2005 GMC
how do I get my gear shift on my 2005 GMC Denali to "unstick" out of park. The truck acts like it is in neutral and turns on. But the gear will not shift out of park. What is going on?!… read more
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Mike Kelly
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,968 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

813 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

256 satisfied customers

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

Mike S.

Mike S.

ASE Certified Technician

243 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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