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Related GMC Questions
Can't get power from signal wire coming from the transfer
Can't get power from signal wire coming from the transfer case to the front diff on my 05 gmc … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
I just replaced the transfer case motor on my GMC Sierra
i just replaced the transfer case motor on my GMC Sierra 1500...now it won't go into gear...what did I do wrong ? Thanks… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 satisfied customers
I have a 2000 GMC sierra. The front actuator engages the
I have a 2000 GMC sierra. The front actuator engages the diff whenever the vehicle is running. If I just turn it to 'on' and shift the 4wd lever, the actuator moves in and out as it should but as soon… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
I have a 2002 GMC Sierra 1500. The 4wd randomly quit
Hello. I have a 2002 GMC Sierra 1500. The 4wd randomly quit working. I have no service messages, the selector switches continue to work normally. I can hear and feel the truck switch from 2-4Hi and 4H… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Sierra 1500: 94 gmc sierra pickup. I have power to transmission
94 gmc sierra pickup. I have power to transmission switch but no power to the actuator when I shift to 4 wheel. high or low… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Yukon 4x4: I have a 1994 gmc 4x4 and the front axles wont
I have a 1994 gmc 4x4 and the front axles wont engage transfere case seems to be engaging but 4x4 will not work any ideas?… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Yukon Denali: Im working on a 2000 Denali. 4wd has been
I'm working on a 2000 Denali. 4wd has been working fine until last weekend. I used 4 Low but it wont come out of 4 low. I can hear the transfer case shift but it aparently doesn't make the full shift … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Sierra slt 4wd: Hi Cam. My truck is a 2004 GMC extended
Hi Cam. My truck is a 2004 GMC extended cab slt 4WD. I keep it well maintained and the 4WD worked perfect only until a couple of days ago. It just disengaged on its own. There are no warnings lighting… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
36,755 satisfied customers
GM Sierra: Matt:My 2004 GMC Sierra occasionally displays
Matt: My 2004 GMC Sierra occasionally displays "Service 4WD." I haven't noticed any problems with the 4WD, BUT, sometimes the light on the selector indicates the truck is in 4-wheel-low (even though i… read more
Dan
Dan
High School or GED
2,257 satisfied customers
GMC Canyon Z71 SLE: Hi , I have a 1997 gmc z71 1500 . It wont
Hi , I have a 1997 gmc z71 1500 . It won't go intoXXXXX. Light blinks , can here transfer case shifting . Replaced front actuater , still the same . Also unhooked battery .HELP The truck has 159 000 K… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Yukon XL 1500: I have a 2003 Yukon XL, 83,000mi. The 4WD
I have a 2003 Yukon XL, 83,000mi. The 4WD doesn't engage. Normal is the 2WD light is on, when I push 4WD high the light changes to 4 Hi but the front end does not engage. There is no Service 4WD in th… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
gmc sierra 2500: Hello, I have a 2002 GMC Sierra 2500 4WD
Hello, I have a 2002 GMC Sierra 2500 4WD in the shop today. The four wheel drive isn't operating. It is not push button, is has the shifter in the floor. All fuses in the truck are good I payed specia… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GM Yukon XLT: 2005 Yukon goes into Auto 4WD every time
2005 Yukon goes into Auto 4WD every time we start the vehicle. We have to remember to press 2HI before we start driving. Sometimes while driving it will automatically switch to 4HI. Most of the time w… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
36,755 satisfied customers
GMC K1500 4x4: How does the transfer case system work in my
How does the transfer case system work in my 1991 K1500 Pickup? I am not getting an indication light next to the floor shifter... although I suspect a burned out bulb... I am always more interested in… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GM gmc sierra 1500: i have a 2000 gmc sierra z71 the 4x4 is
i have a 2000 gmc sierra z71 the 4x4 is not engauging the transfer case is engauging the 4x4 actuater is new and all the fuses are good what can it be?… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
36,755 satisfied customers
I have a 2000 gmc jimmy with 4wd. Yesterday it worked perfect.
I have a 2000 gmc jimmy with 4wd. Yesterday it worked perfect. Today the "service 4 wd" light came on. The light come on 4wd. Then the other drive light won't come on. After pushing serveral of the bu… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
18,052 satisfied customers
GMC Sierra 1500 HD Classic SLE: I have 2002 gmc sierra. the
I have 2002 gmc sierra. the 4wd was not engaging.The light would go to 4 hi when the button was pushed but it was not going into 4wd. I changed the axle motor in the front. now when you push the butto… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
2,126 satisfied customers
GM sereria: i got a 2005 gmc 1500 pickup and the service 4wd
i got a 2005 gmc 1500 pickup and the service 4wd is on its been on for a couple of weeks but the 4wd still worked but the other day i put it in 4wd and it would not come out so i shut the truck off an… read more
relicdigger3
relicdigger3
Automotive Technician
Bachelor's Degree
214 satisfied customers
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

2,126 satisfied customers

GM Grand Master Technician 2007. 14 year experience.

Gary

Gary

ASE Certified Technician

18,052 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

904 satisfied customers

24 years of experience diagnosing & repairing

JFN1

JFN1

ASE Certified Technician

272 satisfied customers

GM Master Technician

Mike S.

Mike S.

ASE Certified Technician

256 satisfied customers

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

George H.

George H.

ASE MasterTechnician

233 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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