Question about 2002 Chevrolet Tahoe

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Keyless entry I bought a keyless entry to replace the lost one at the dealer but it needs to be resynced. Can anyone help. I read the manual and tried the 7 second thing any other sugggestions???

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  • Chevrolet Master
  • 5,332 Answers

Try this
-close all the doors.
-insert key into ignition
-hold the lock button in the unlock position (do not let up unitlinstructed later)
-turn the ingition switch on (do not start)
-turn the ignition switch off
-turn the ingition switch on (do not start)
-turn the ignition switch off
-release the unlock button. you should hear the doors lock and unlock]
-hold down the lock and unlock buttons on the remote at the same time. Wait until the doors lock and unlock.

Posted on Feb 09, 2012

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  • Chevrolet Master
  • 76,118 Answers

That has to be done with the special scanner called a Tech2 at the dealer, the scanner allows for an interface to be established with the security module for reprogramming, so sorry you can't do this at home.

Posted on Feb 09, 2012

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Posted on Jan 02, 2017

emissionwiz
  • 76118 Answers

SOURCE: programing keyless entry

If you have an owners manual the programming instructions are in there. If no manual here they are:

1. Turn the ignition off.
2. Ground the receiver program terminal. Jump the two terminals located in the programing ground connector. (What this means in simple terms is locate the wires that run on the right side of the trunk. There is two black wires that has a plug on the end with two prongs. It is in between the antenna and tail lights.)
3. Within 2 seconds of connecting the prongs the door locks will lock. The unlock and the rear compartment lid release will produce a cycle, causing the horn to chirp. This indicates that the module is ready for reprogramming.
4. Press and hold the lock and unlock buttons at the same time until the doors lock and unlock. The rear compartment lid will release and the horn sounds to indicate that the transmitter has successfully been reprogrammed. (Hold buttons down for approximately 12 seconds)
5. Repeat the previous step for the remaining transmitters.
6. Remove the jumper at the program connector.
7. Verify the proper operation of each transmitter

Posted on Sep 30, 2008

emissionwiz
  • 76118 Answers

SOURCE: keyless entry

1. Remove key from ignition.
2. Remove the “BCM PRGRM” fuse from the fuse panel, accessed by opening the front passenger
door. Use the legend on the fuse panel to properly locate the “BCMPRGRM” fuse.

3. Close all of the doors.

4. Close the liftgate.
5. Insert keys into the ignition, and turn the ignition lock cylinder to ACC (one click towards you –
the opposite direction from starting the engine).

6. Turn the ignition lock cylinder to OFF, and then back to ACC within 1 second.
7. Open and close any vehicle door. A chime will be heard when the system enters the programming
mode.

8. Press and hold the transmitter LOCK and UNLOCK buttons simultaneously for 14 seconds.
IMPORTANT: After 7 seconds, a chime may be heard confirming successful synchronization. It
is necessary to wait approximately 14 seconds for a second chime that will confirm successful
programming. Your new remote has been accepted and all existing remote codes have been
erased.


9.
Repeat the previous step on each additional transmitter to be programmed (including any existing
transmitters).

10. Remove the ignition key from the ignition lock cylinder.
11. Install the “BCM PRGRM” fuse back into the fuse panel.

Posted on Dec 05, 2008

alicantecoli
  • 22156 Answers

SOURCE: keyless entry on 2005 chev uplander doesn't function

Or is it the recieving sensor ???

Posted on Apr 12, 2009

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the keyless entry code is on the module and in the module memory. A dealer can extract the code ( about $50). You can access the owner manual on line at motorcraft.com, pro center, tech info, owner manual. I have one for $7 plus postage. let me know. Also, look for a plastic credit card in teh glove box with the code on it. The module should be under the dash, driver side I think.


Programming/Erasing Personal Code
A unique personal five-digit code can be programmed by following these steps:
  1. Enter the factory set five-digit code (the keypad will illuminate when pressed).
  1. Press 1/2 within five seconds of Step 1.
  1. Enter the unique five-digit code.
The personal code does not substitute for the permanent factory set code. Either code can be used to access the vehicle. In addition, if a second personal code is programmed, it overwrites the previous personal code. To erase a personal code, carry out the following procedure:
  1. Enter factory set five-digit code.
  1. Press 1/2 within five seconds of Step 1.
  1. Press 7/8 and 9/0 at the same time within five seconds of Step 2.
The system now responds only to the factory set code.
Anti-Scan Feature
To provide added security, the keyless entry pad is disabled for one minute after 35 button presses without a valid entry code being entered. The keypad flashes during this one-minute mode with all functionality disabled except for 7/8 and 9/0 still being allowed to lock the vehicle.
Anti-Scan will be turned off after one minute of keypad inactivity.
Unlocking the Doors and Liftgate with the Keyless Entry Keypad System
To unlock the driver door, enter either the factory set code or the personal code (each digit must be pressed within five seconds of the prior digit). The interior lamps will illuminate.
To unlock all doors, enter either the factory set code or the personal code (driver door unlocks) and press the 3/4 control within five seconds.
To open the liftgate window glass, enter the factory set code or the personal code (driver door unlocks) and press the 5/6 control within five seconds.
Locking the Doors with the Keyless Entry Keypad System
It is not necessary to enter the factory set or personal code prior to locking all doors. To lock all doors, press the 7/8 and 9/0 controls at the same time

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Step by Step Solution:
1. Check the battery in your Key Fob/Remote, Replace?
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Matching Transmitter(s) to Your Vehicle
Each remote keyless entry transmitter is coded
to prevent another transmitter from unlocking
your vehicle. If a transmitter is lost or stolen, a
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Remember to bring any remaining transmitters with
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matches the replacement transmitter to your
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matched. Once your dealer has coded the new
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94

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THIS IS THE PROCEDURE, FOLLOW IT EXACTLY OR IT WILL NOT WORK.



Transmitter Programming
No Tools Required
In the event that a transmitter is lost, program the old and the new transmitters into the memory of the remote control door lock receiver. Up to 4 transmitters may be programmed.


Important
Once the keyless entry receiver enters the programming/diagnostic mode, the programming of the first transmitter erases all previous transmitter programming information. You must then program all of the transmitters.

Program only 1 vehicle remote control door lock receiver at a time. If you program multiple receivers simultaneously, the same transmitter could possibly be programmed to more than 1 remote control door lock receiver.


Perform the following steps:

Sit in the vehicle driver's seat. (actually it’s much ezr from the front pass seat)
Remove the ignition key from the ignition lock cylinder.
Close all of the vehicle's doors.
Remove the MALL PGM fuse from the fuse panel. Refer to Electronic Diagnosis in Body and Chassis.
Turn the ignition lock cylinder to the ACC position.
Turn the ignition lock cylinder OFF, then back to ACC within 1 second.
Open and then close any vehicle door. You will hear a chime when the remote control door lock receiver enters the programming/diagnostic mode. If you do not hear a chime, start again at step 1.

Important
After 7 seconds, you may hear a chime confirming successful synchronization. After approximately 14 seconds, you will hear a chime confirming successful programming.


Press and hold the transmitter LOCK and UNLOCK buttons simultaneously for 14 seconds.
Repeat step 8 in order to program each additional transmitter.
Remove the ignition key from the ignition lock cylinder.
Install the MALL PGM fuse back into the fuse panel. Refer to Electrical Diagnosis in Body and Chassis.
Validate that all the transmitters that were programmed operate properly. Refer to Keyless Entry System Operation

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