PASSENGER DOOR LOCK ACTUATOR

[reevesjo]

1999 Silverador 2500 LS with power door locks.  Passenger side door lock actuator will "lock" from key fob, driver's side button, passenger side button.  Will not "unlock" with any of these three controls.  Driver's side actuator locks and unlocks from all three controls.  I would like to know the terminals or wire colors in both the driver's side and passenger side buttons so I can jumper....without taking all of the door trim apart to get to the actual actuator.  I am trying to trouble shoot whether the actuator is bad or just a broken wire somewhere.  Thanks for any help.

[Ak_grown]

sorry for incomplete info. but this is what i can find.

1999 Chevrolet Silverado Alarm, Remote Starter, Keyless Entry Wiring Information
Constant 12V+	Red	Ignition Switch Harness
Starter	Yellow	Ignition Switch Harness
Ignition	Pink	Ignition Switch Harness
Ignition 2	White	Ignition Switch Harness
Ignition 3	Brown	Ignition Switch Harness
Accessory	Orange	Ignition Switch Harness (Heat/AC)
Tach	White V6	Coil, If V8 at Any Coil, 1 Cylinder Setting
Brake Switch	White	Brake Switch
Trunk Pin	n/a
Parking Lights	Light Blue (+)	Light Switch
Head Lamp	Yellow (+)	Light Switch
Factory Disarm	Light Green (-)	Keyless Module
Door Trigger	Tan DR. (-)	Light Blue Passenger's Module below Steering Column
Door Lock	Light Blue (+)	Keyless Entry Module below Steering Column
Door Unlock	White (+)	Positive Trigger
Driver's Lock	Gray	Driver's Kick Panel
Driver's Unlock	Tan	Driver's Kick Panel
Passenger Unlock	White	Driver's Kick Panel
Horn Wire	Black (-)	Steering Column
Windows Up	LF=Dark Blue, RF=Light Blue
Windows Down	LF=Brown, RF=Tan

 

but those wires would be running together outta the door boot or kick panel where ever you want to test them. the door trim is pretty easy to come off, but i have done it plenty of times 

[reevesjo]

Thanks AK_grown.  This should help when I get a chance to track down the problem.

[reevesjo]

MUCH LATER.....I finally determined that the latch mechanism was bad.  After I replaced it, the UNLOCK would still not work.  I traced wires, checked fuses, traded the LOCK and UNLOCK relay positions in the fuse block with no change.  I then discovered the "third relay" and exchanged it with the first.  Everything now works properly!!!  Who knows why?  Could be a dirty connection in the UNLOCK relay socket?