On Mon, 24 Feb 2014 07:48:25 -0500, Stormin Mormon
wrote:

On 2/24/2014 7:03 AM, Vic Smith wrote:
I've had good luck with motor oil.
Had a Chevy under warranty with a sticking lock.
They lubed it up with GM brand lock lube.
Longest lasting fix I had, then I went to motor oil which was next
best and handy. Use an oil can, and wipe off excess.

I tried ATF, already. By lock, you mean where
you put the key in? On my van, the latch is
sluggish, about a foot below the key cylinder.

Everywhere. Latch and lock mechanism.