door locks

[john]

my problem is this: my doors lock when i set my alarm, my doors lock when i use my factory keypad, my doors lock when i put it in drive like it supposed to, i just put new lock/unlock switches on from the dealer,(both doors) but i cannot lock the darn doors with the switch''s....they unlock but they don''t lock......they unlock with the switch just fine but they dont lock... i''ve even locked the doors without the switches even installed in the doors....via the alarm remote and or factory keypad.....what could be wrong!!!!!!!(2000 chevy venture)

[fred]

check the wiring under the passenger side sill probably a broken wire i had the same problem it was a blue wire

[John]

Just fixed the same problem. Under the rug on passanger side, there is bunch of wires going from rear and left side to the front and up to the fuse and Body Control Unit (large plug under the dashboard). There is few corroded connections of wires in the pack. Check the light blue wire coming from driver side and to the front part of passangers side. There is three light blue wires connected together, corroded and most probably disconnected from each other. To reconnect them I used soldering gun and isolation tape and my problem was solved. This joint connects the left door wire with right door wire parallel and then to the plug BCU under the dashboard. The fuse was good, both switches too, but no locking from both doors at all.