Sounds 100% like the actuators. I don't have one, I've never seen the
problem - but that's what it sounds like. Move it a few times and the short
comes back, have to wait for it to work again. Carefully pull the door
apart, it's easier'n gettin in a girls pants. You'll want a multimeter,
check the wires etc.... lalala. Common Pins (think sewing) will help you
check continuity from outside the door to the inside where the wire
connections are........ Have fun. Make sure you have time to clean up - it's
surprisingly greasy in there. Sometimes I wonder if I don't have a massive
engine-oil leak that travels to my door.

Re: 99 suburban door locks  

Group: alt.trucks.chevy Date: Thu, Oct 23, 2003, 2:11am (CDT+5) From:
kdm75@prodigy.net (kdm75)
My back door does it regardless of weather. It usley works every time
after sitting for a while but once i lock the doors a few times it
doesnt want to work any more on just that passenger side back door.So is
there any way to tell for shure if its the Actuators?If it is, is this a
job to take on yourself? I never messed with any thing behind the door
before "Steve Cook" <The_Gear_Head@webtv.net> wrote in message
news:29559-3F948949-40@storefull-2212.public.lawson.webtv.net...
Re: 99 suburban door locks
Group: alt.trucks.chevy Date: Sun, Oct 19, 2003, 1:34pm (CDT+1) From:
ken@kensrowltd.org (ken)
Thanks for posting this question & the ans. Same problem here with a '99
Yukon but only occurred in the middle of the hot summer a few times. Ken
"kdm" <kdm75@prodigy.net> wrote in message
news:ceqkb.5859$6q6.430@newssvr17.news.prodigy.com... First off this are
power locks. My problem is that the passenger side back door only locks
well when it feels like it.Some times it will lock when i mash the
button and other times it just kinda moves slightly with out
locking.Also when i cycle the locks say 4 are 5 times in a row the hole
system just kinda losses all locking power and none will do any thing.
What could be the problem with this thing?
This is a very common problem .. But I guess it hasnt happened enough
for gm to do anything about it.......It may seem like it but it has
nothing to do with the door getting hot....The Door Lock Actuators are
what the problem is...The have a habbit of have a intermitted short in
them causing this prob...The only way to fix it is to replace it...Or if
your using a remote it may need to be reprogrammed or the battery is
running low......These are the only problems Ive came acrossed...Also
low voltage could also have an effect .... Steve C

Just from experience its more than likely the lock actuator.....I
change out at least 4 or 5 a week.....Its not hard but its not easy
...I your really interested i can tell you how to do it
Steve C