Why does my Chevy Express door locks jump erratically?

Answer by  bvolkel (32)

Electrical shorts could cause this problem. A factory default in computer chip could cause this problem. The brand of the vehicle could just be the default in all truth and honesty.

Answer by  vanesabr5 (47)

Your Chevy Express might have water on the door master switch. I will recommend checking for moisture and dry with compressed air if this does not work make sure terminals are not corroded.

Answer by  Chris28 (34)

Possible short in the wiring leading to the power lock module, or to the master switch. Check all wiring to the module, to ensure there are no shorts. Also check all vehicle grounds.

Answer by  yarman (26)

Sometimes the door lock will jump erratically because there is either a short or something grounding out in the door panel.

Answer by  spencerb (48)

If your Express has remotes there is likely a problem with the remotes or the receptor for them. There also could be some sort of interference from an outside source. You should also note that if you have just recently added some electrical componets to your vehicle you may have grounded something to your lock circuit.

Answer by  Taran (716)

I know this has probably been on here a hundred times before, but can anyone,tell me the procedure for entering the program mode for the remote door,locks and the procedure for programming them? I had one go bad and got,another on ebay now I need to set.