Hey guys I'm Rob, I just got my first blazer about 3 months ago as of late when the truck is moving under power or not I hear this clicking noise from under the truck! Any ideas on what this may be and if its a easy fix? Thanks for any help!

 

Is it when turning? Does it do it when not in gear and you rev the motor?

 

What year? 4x4?

 

Sorry about lack of info, its a 2003 ls with the 3 button 4x4 and its has 98k
It makes the noise anytime the truck is moving, whether I'm on the gas or just coasting. It's not just in turns so I don't think its the front cv's sounds like its kinda Centered under the truck.

 

Possible u-joint.

 

I do hear that metal on metal clang if I get on the gas quick but I didn't know they would also click! This is my first 4x4 I've only worked on cars before is it something I could do myself, or do I need specialty tools? I also need to replace my rear diff cover it has a slow leak.

 

+1 on the u joint. If you have never done one they can be a pain. The diff is very simple, can be messy but easy.

 

Ok thanks guys! I think I'm Gona give it a go next weekend! Any recommendations on what brand I should go with? And I'm not worried about the diff I wrench on a race car with a quick change rear, so the mess I'm ready for!! Lol thanks again for the feedback!! I'm sure the more I dig the more I'm Gona find the person that had it before me must not have known what maintenance means!!

 

+2 on the u-joint. Factory u-joints do not have grease zerks, so they eventually go bad and start clicking or chirping. Don't go cheap when replacing these. They are kind of a pain in the neck to do. Personally, I use Spicer brand U-joints.