Cleaning thermocouples is a temporary fix for pilot light issues. Here's an easy, permanent fix for usually only $8 dollars.
00:00 Introduction
00:27 Power/Gas Off
00:51 Removing Burner/Pilot Assembly
01:46 Removing Old Thermocouple
03:08 Installing New Thermocouple
04:21 Thermocouple Connection at Gas Valve
05:38 Relighting Pilot Light
06:34 OEM or No OEM?