2004 chevrolet silverado manual to auto door locks avital 5305l i have a 2004 chevy silverado base edition without power windows and door locks.
Power door lock not enough power.
To get ground the ground path goes through the non energized power door lock relay which is in the ground position when not energized and then to ground.
It was inside the lock actuator and was a disc a bit smaller than a dime between two contacts series to the motor.
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Apart from what has been stated in part 1 diagnosing problems with power door locks is not always a straightforward affair but one way to avoid confusion and misdiagnoses is to approach the problem logically.
For vehicles equipped with door lock cylinders the door can still be opened using the key.
That s a dead ringer sign of a bad door lock actuator.
In a partial failure you ll hear some noise coming from the door panel and the manual door lock button may appear to move slightly but not enough to completely lock or unlock the door.
In some cars a door lock actuator becomes noisy and produces a squeaking or buzzing noise when the power door locks are locked or unlocked.
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The process is similar when you move the switch to the lock position.
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If the electric motor or the mechanism inside the door lock actuator wears out the door lock may lock or unlock slowly or work sometimes but not all the time.
That may lead you to think the door lock actuator linkage is binding.
If the power door lock relay fails it will cut off power to the entire power door lock system and may cause them to not function correctly.
When you use the key fob to lock or unlock the doors the receiver provides power to the unlock and lock control coils and the system operates just like if you had used the door.
It sounds simple enough right.
Volvo and others have used a ptc resistor as a sort of thermal overload for lock motors.
Power door lock problem.
Re upload from my old channel.
Diagnose power door locks don t work properly part 2 by reiner continued from part 1 power door lock repair tips tricks.
Power door locks that do not function are another common symptom for a problem with the door lock relay.
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The lock actuator consists of a small electric motor that drives a gearbox which in turn locks and unlocks the door.
Not enough power to the door lock actuators.
