2000 Blazer Interior Lights Not Working

When I Get In And Out Of Blazer, The Interior Lights Don't Work.....but When I Push The Keyless Remote To "unlock" The Blazer They Work. Also, When I Lift The Outside Door Handle The Interior Lights Should Go On But They Don't. Its Very Frustrating At Night When Getting In And Out Of Car. I've Checked Manual ...nothing!.... I've Checked Fuses....nothing...
Has Anybody Had This Minor Problem.