I have a 1999 ls blazer and my transmission is giving me fits. After driving for about an hour it starts to shift really hard, but if i stop and turn my engine off and then turn my engine right back on it will shift normally for about another hour and then the problem starts all over again. anyone else having this problem? or if anyone knows how to fix this problem please message me. thanks

 

It definitely sounds like there is an electrical issue at hand. Are their any stored codes?