Door Locks work sometimes Fix?

[1drummer]

Hi all,

I am just checking to see if anyone knows the fix for door locks on my 99 Yukon only working sometimes. The front doors only lock or unlock half way and the back seem to work about fifty percent of the time. The locks are triggering but it seems it isn't getting enough juice to actuate the locks consistently or all the way. I have been looking in the search here, but haven't run across any fix posts for my dilemma.

I would appreciate the help in the cure and thank anyone in advance for any feedback.

Richard

 

[SunlitComet]

Just usually old actuator or dirty locks that need cleaning.

 

[1drummer]

Tried that already and replaced one to see if that would fix it, but no difference. This actually started back some time ago, it only had 20,000 miles on it and it is garage kept.
Any other suggestions?

Thanks

Richard

 

[SunlitComet]

Only other idea is weak electrical connections. Try unplugging and reconnecting you lock plugs and harness. Maybe even measuring volts at a lock when triggered to see voltage.

 

[1drummer]

O.K. I'll try that.

Thanks for your help.