Hello,
I own a 1997 GMC Yukon GT. In about the past 3 weeks when I start up the engine I hear a clicking noise that lasts for about 1-5 minutes. I asked one of my friends who is a mechanic and he said it has something to do with a valve that pumps oil into something and it does that because there is no oil in the part. I am kinda worried. Ive been driving this truck ever sence I got my drivers license and I have let it go over the years. I want to keep this truck forever and someday I hope to have it completely restored. If anybody can help me PLEASE let me know what you think it may be.
Thank You
-Ross

Sounds like a bad lifter. The intake manifold has to come off to replace the lifters. Recommend replacing all of them at the same time.

//2000CAYukon

Hello,
I own a 1997 GMC Yukon GT. In about the past 3 weeks when I start up the engine I hear a clicking noise that lasts for about 1-5 minutes. I asked one of my friends who is a mechanic and he said it has something to do with a valve that pumps oil into something and it does that because there is no oil in the part. I am kinda worried. Ive been driving this truck ever sence I got my drivers license and I have let it go over the years. I want to keep this truck forever and someday I hope to have it completely restored. If anybody can help me PLEASE let me know what you think it may be.
Thank You
-Ross

2000CAYukon gives great advice.

Ross, does your oil pressure indicate normal? Your friend may be talking about the pressure relief valve in the oil pump. I just went through that in my Yukon, and there's a thread about it. I hope it's an easy fix either way. Best of luck.