Question about 2002 GMC Sierra 2500HD

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I have a 2005 GMC Sierra 2500 HD and the doors will lock and unlocking theselves repeatedly. As if someone were playing with the lock button. It usually does it when it is/has been raining or rain is near (humidity).

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If your doors lock when you drive and hit about 20 mph there is a sensor in the transmission that can go out. Do you have any issue with it telling you what gear your in?

Posted on Sep 27, 2008

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How to syncronize 2 keyless remotes for 2000 gmc sierra


Here is the way to do it.
1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.
4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.
10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.
11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

May 25, 2012 | 2000 GMC Sierra

1 Answer

2005 GMC 4x4 HD 2500 6.0 eng. rear axel seal


SEAL COULD BE LEAKING CAUSE YOU DIDNT LUBRICATE THE SEAL LIPS WITH PETROLEUM JELLY TO HELP THE THE SEAL LIP SEAL OR YOU DAMAGE THE SEAL WHILE DRIVING IT IN.AXLE FLANGE NUTS TORQUE IS 58 FT LBS THE AXLE HUB NUT TORQUE IS 177 FT LBS.

Jul 14, 2010 | 2005 GMC Sierra 2500HD 4WD

1 Answer

I changed batteries in my 2003 GMC Sierra key fob


1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.

4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.

10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.

11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

Mar 06, 2010 | 2003 GMC Sierra 1500

1 Answer

2005 gmc duramax seat warmers wont stay on


I have a 03 sierra 1/2 ton with the same problem.... I just took it to my dealership on friday and they said its the memory module... I think thats what they called it,,,, $500 plus labor for a new one.....

Oct 11, 2009 | 2005 GMC Sierra

1 Answer

Remote control no longer opens the lock


Sounds like the button to unlock doors on the fob is worn out. You can purchase a new one or used from your local recycle yard.

Jun 01, 2009 | 2003 GMC Sierra 1500

1 Answer

How to program a keyless entry fob for 2005 gmc envoy - i am replacing the battery in my key fob every 5 days. I have to be right next to the car for it to work. Any idea what would cause this. I ordered a...


Seating in the drivers seat , make sure all doors are closed.Insert key into ignition, don't turn on yet.
Wait for the dome light to go out, then press and hold the door unlock button , make sure it is UNLOCK, while turning the key ON OFF ON OFF Twice , do not engage the started, just on to the point of being on. Release the unlock button,and your doors should lock, then unlock indicating programming mode.At this point hold down both the lock and unlock button on the key fob. After 30 seconds your locks should lock and unlock, indicating the fob is programmed. This must be repeated for all remotes, whether or not it be new or old. After all remotes are programmed, turn the key off and on again to exit programming mode.

May 18, 2009 | 2005 GMC Envoy

1 Answer

03 GMC Seirra Right ft door electrial dead


Not sure if you have looked, but under the driver's side dash, is another fuse panel that houses the fuses for the right door. Might be a good place to start.

Jan 11, 2009 | 2003 GMC Sierra 2500HD

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