Well Steve, our saga continues!! Do you have Barn or Clam Shell doors on yer 'Burb? Might I suggest you use what I found successful on my rear barn doors; a set of GM OEM contact switches found on the side sliding door of a 1993 GMC Safari. I'll look up the part # if you need. I found these to fit into the existing door cut out for the old stock switch, quite nicely!!
Also - what have you heard in regards to our pwr lock problems? I may have some other ideas as well...
Steve