in that case, you can buy a new pig tail, thats a plug and 12 inches of wire off it. one for each window. theres a shop on e bay that will make any GM pig tail you need brand new properly color coded too.
you can pm them during the week, they responded very fast to me. as all they list is ls1 stuff. but can make any thing GM for like 10 bucks a pig tail. http://www.ebay.com/sch/autowiringso..._from=&_ipg=25
or if you have local junk yard cut the plugs off and solder them to your wires. the wires are colored and should be the same. easy to match up.