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My alarm system keeps going off after I lock the truck. No I
My alarm system keeps going off after I lock the truck … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
Factory alarm failed, can't start the truck.. new battery in
Factory alarm failed, can't start the truck.. new battery in both fobs... … read more
JFN1
JFN1
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I have a 2014 and sierra 3500 duramax 4x4 dually went to get
I have a 2014 and sierra 3500 duramax 4x4 dually went to get In and crank but key fob wouldn't u lock the doors so I opened out with key , it will not even click when I turn key , security light is on… read more
Gary
Gary
Senior Technician
Vocational, Technical or Trade School
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My spare key will unlock the door, but won't start the
My spare key will unlock the door, but won't start the truck. It will turn, but not start. … read more
Jake Cheek
Jake Cheek
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I inserted my key into the ignition turned the key and it
I inserted my key into the ignition turned the key and it flashed on my display "Service Anti-Theft System" and completley shut down my FOB doesnt work the truck wont start and wont even crank. … read more
BOBBYSS
BOBBYSS
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Associate Degree
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Replaced ignition lock cylinder and theft deterrent control
Replaced ignition lock cylinder and theft deterrent control module. Because key wouldn't turn so I was using a flathead screwdriver to push up on ignition lock cylinder so I could start my truck. Well… read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
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Can't get the alarm to go back to normal. Keeps honking and
Can't get the alarm to go back to normal. Keeps honking and flashing and won't respond to the remote shutoff. Yes, I changed the battery in the remote and the negative cable has been disconnected and … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
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No crank no start everything comes on battery alternator
No crank no start everything comes on battery alternator starter is fine acts like it's the anti theft … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
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WORKING ON MY 2006 GMC SIERRA 3500 6.0 GAS. IT has a plow
WORKING ON MY 2006 GMC SIERRA 3500 6.0 GAS. IT has a plow but lastnight took the harness off that was being powered through the head lights. i replaced throttle body and pedal. ell after all this i co… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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06 Sierra. Removed the instrument cluster lights, put it
06 Sierra. Removed the instrument cluster lights, put it back in and truck wont start. Accidentally tried to start it without the cluster connected. Pass lock, I'm sure...… read more
Don - Mo Lurch
Don - Mo Lurch
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GMC Sierra 1500: I have a 2003 GMC Sierra. The key fobs have
I have a 2003 GMC Sierra. The key fobs have stopped working, but the test at Auto Zone says they are good. My battery checker says that the batteries are good. I can unlock the passenger side door wit… read more
Pete
Pete
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General auto certifications
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GM Sierra Denali: Hey, I got a 2007 Sierra Denali 4 door 2wd
Hey, I got a 2007 Sierra Denali 4 door 2wd and I took the rear seats off to replace the seat bumpers had engine off the key to the start position with the radio on 15 min then I tried to start the tru… read more
lightsout22
lightsout22
160 satisfied customers
GMC Yukon Denali: I have a 2000 GMC Yukon Denali with the 5.7l
I have a 2000 GMC Yukon Denali with the 5.7l V-8 engine. Am having trouble with the door locks and key fob. First problem I had was with the 2 front door locks. Key fob worked at this time. Had to rep… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
My 04 GMC Sierra wont go into key fob remote programming mode.
My 04 GMC Sierra won't go into key fob remote programming mode. The locks cycle before I release the unlock switch after cycling the key on-off twice.… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,832 satisfied customers
GMC Tahoe: if the anti theft system cant be reset with one
if the anti theft system can't be reset with one key is it possible that spare key will start the truck? tried the 3 cycle reset process and still stalls. Don't have scan tool to clear codes.… read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
1,589 satisfied customers
GMC Sierra 1500: I have a 2007 GMC Sierra 1500 Z71 4x4 with
I have a 2007 GMC Sierra 1500 Z71 4x4 with plow package (new body style). I've been having an intermittent problem with the truck where it will not start. I put the key in, turn it on, and the truck h… read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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GMC Hummer: I have a 03 H2 Hummer...all power is on in the
I have a '03 H2 Hummer...all power is on in the vehicle...every thing is working just fine, even the alarm system...even bought a new battery and my vehicle WILL NOT START...Suggestions EC… read more
Ivan
Ivan
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Bachelor's Degree
4,857 satisfied customers
GMC Jimmy 4x4 (Mid Size): I have a GMC jimmy that wont start
I have a GMC jimmy that won't start this morning. There is no sound when I turn the key, the key is locked in the ignition, the electric door locks will not function (they have been malfunctoning for … read more
Dave Nova
Dave Nova
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Meet the Experts:

Gm Tech (Cam)

Gm Tech (Cam)

GMC Mechanic

1,832 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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