Sierra Truck How To Clean And Lube Slip Yoke On 99 GMC Sierra 1500 Truck?

How to clean and lube slip yoke on 99 GMC Sierra 1500 truck? - sierra truck

I need to know how to clean and lubricate the slip yoke on my 99 GMC Sierra 1500 truck. I am a newbie error, but I wonder if I can do yourself. Lubriant I know I need (Lubriant Special GM # 12345879), but I do not know how to clean and lubricate the slip yoke. If someone would kindly follow me through the step by step (perhaps with the service manual?), Then I would be very happy. Thank you.