My truck was built 10/2000 Do I need the 803 or the 968? Thanks in advance.

 

UNfortunately, you have to go by which RKE Reciever you have in your truck. The only way to know this is take it to a dealer or Someone with a GM Tech II. You hook your truck to the Tech II and go to special functions and check the RKE Reciever number, then order accordingly.