I have a 97 Tahoe 2dr 4Wd with a 5.7Ltr. I have some problems with my fuel pump. It seems that on wet days after driving around and stop, I try to restart it, but the pump dont kick on. No hum or anything when I turn the key one click foward. After about a day it seems there is no problem and starts right up.Could the contacts on the harness above the tank be a problem?? Bad or wet connection? Or is there another problem more common that I should know about. I changed the relay under the hood already and actually changed the pump six months ago thinking it went bad. Help me out here.......................Thanks in advanced