I need information about how to clean and lubricate the slip yoke on my truck. I am a repair novice, but I am wondering if I can do this on my own. I know the lubriant I need (GM Special Lubriant #12345879), but I do not know how to clean and lubricate the slip yoke. If someone would be so kind as to walk me through the process step-by-step, I would greatly appreciate it. Thanks.