Another door lock question, need help! ('95 C1500)

[FloridaST]

Hi all, I have a '95 C1500 5.7 and I've been having intermittent power door lock issues. The other day I only heard the relay clicking so I checked my battery and it was only around 12.2 volts. I charged it for a few hours and all was fine after that.

Today, I bought a new battery to replace the old and now my power locks don't work again. All I hear is a relay clicking when I hit the door lock switch on the driver's side door. Maybe the truck needs some time to reset? Maybe the new battery is a bit low?

Any ideas?

 

[AK49BWL]

Sounds more like either the motors are getting weak or the circuit breaker is starting to quit. My doors will lock and unlock down to about 8 volts, ask me how I know that one lol

 

[FloridaST]

Sounds more like either the motors are getting weak or the circuit breaker is starting to quit. My doors will lock and unlock down to about 8 volts, ask me how I know that one lol

Could be, I'm sure they're the originals. I'll see if any of the wires are broken in the door pass through but otherwise, I'll just start replacing parts starting with the breakers - they're old anyway.

 

[Donald Mitchell]

could just be a ground issue, This PDF has all circuits in it so you will have to hunt a bit.
http://pswired.com/misc/pacaudio/syswire.pdf

 

[FloridaST]

could just be a ground issue, This PDF has all circuits in it so you will have to hunt a bit.
http://pswired.com/misc/pacaudio/syswire.pdf

Cool thanks, I'll check it out. I guess the reason I posted was to see if maybe there was something obvious I was overlooking. I'll figure out the issue eventually.

 

[alpinecrick]

Another consideration is how dirty are the mechanisms? I thought I needed new cylinders in my locks. Dismantled the doors and thoroughly cleaned EVERYTHING, door locks, door latches, window mechanisms, greased stuff and now my doors work like, well, new........

 

[FloridaST]

Another consideration is how dirty are the mechanisms? I thought I needed new cylinders in my locks. Dismantled the doors and thoroughly cleaned EVERYTHING, door locks, door latches, window mechanisms, greased stuff and now my doors work like, well, new........

Well prior to the battery change, they were working. That same day, I changed the battery and then, no worky. I'm sure everything could use a good scrubbing though.

 

[GoToGuy]

Most relays GM uses will function down to 9 volts. Most likely not below that. So the battery is not the prob. Door lock solenoids get tired wear out, start with test light. Door switch lock/ unlock gets alot of cycles. You hear relay click start chasing power down to where it stops.

 

[FloridaST]

I fixed it! I ordered a couple new 30 amp circuit breakers and replaced the old ones and the locks are working again. These are the two metal breakers in the fuse box on the side of the driver's side dash. Easy fix this time...