I have a 2002 blazer 4x4 and the doors lock when i put it in drive,to unlock i have to put it in park.I would like to reprogram the door locks so they only lock when i want them to,is there a way to do this.
Thanks Al

 

It is possible, but I do believe that it can only be performed by a Tech 2 scanner (ie. Dealership). Hopefully your dealer is nice and will change this setting for free, but I doubt it.

BTW, the feature is called 'rolling locks'. Just ask them to disable it.

*EDIT* - The option is user programmed on the 2002+ trucks, but the 99-01 models can only be changed with a Tech2.

 

This feature is fully user-programmable. When I get home, I'll post the procedure.


[hr]

Okay, as promised:

If the vehicle has power door locks, it is equipped with a feature that enables you to program the power door locks.
The vehicle left the factory programmed to automatically lock all doors when the vehicle is shifted out of PARK (P), and all doors unlock when the vehicle is shifted into PARK (P).
If the vehicle has a manual transmission, it left the factory programmed to lock all doors when the vehicle speed is greater than 13km/h (8mph) for two seconds, and unlock all doors once the key is removed from the ignition.
The following instructions detail how to enter the programming mode for the power door lock feature:

1. Begin with the ignition in OFF. Then pull the turn signal/multifunction lever all the way toward you and hold it there while you perform the next step.
2. Turn the key to RUN and OFF twice. Then, with the key in OFF, release the turn signal/multifunction lever. Once you do this, you will hear the lock switch lock and unlock.
3. You are now ready to program the automatic door locks. Select one of the following four programming options and follow the instructions. You will have 30 seconds to complete programming. If you exceed the 30second limit, The locks will automatically lock and unlock to indicate that you have left the program mode. If this occurs, repeat the procedure beginning with step1. You can exit the program mode any time by turning the ignition to RUN. If the LOCK/UNLOCK switches are not pressed while in the programming mode, the current LOCK/UNLOCK mode will not be modified.
4. The following is a list of available programming options:
   • All doors lock/Only the driver's door unlocks: Press the lock side of the power door lock switch on the door panel once,and then the unlock side once.
   • All doors lock/All doors unlock: Press the lock side of the power door lock switch on the door panel once, and then the unlock side twice.
   • All doors lock/None of the doors unlock: Press the lock side of the power door lock switch on the door panel once, and then the unlock side three times.
   • No doors lock/None of the doors unlock: Press the lock side of the power door lock switch on the door panel twice. This turns off the automatic door lock feature.

 

Thanks for your help,i finnally got it right,i was putting on the left signal instead of pulling the signal towards me,