I bought a 2001 Silverado 2nd hand and it did not have a remote. I just figured that it did not have that feature. after reading the OM, realized that it did so I ordered the remotes for it. When I try to enter program mode, the locks don't cycle but you can hear similar clicking in the dash. now... the power locks work perfectly on a day to day. can anyone tell me what might be disconnected that would interfere with entering program mode?