I was test-driving the 02 Tahoe my parents bought from their friends, and noticed that the 2nd row doors squeak. I tried spraying lubricant [which I used to get the squeak out of my bedroom fan's motor], and this was applied to the hinges and this grey bar in the middle of the door assemblies. The spray did not help, so I have no idea what will. Any suggestions?

Thanks

 

Got this annoying squeek on my backdoor drivers side.
On my car this is not on the hinges, but rather the upper gasket . the door gets too close to this.
Bad patent from GM. Use WD-40 in this. it stops the noise for some weeks.

 

Thanks! Since I'm not as knowledgeable on cars as everyone here [I'm only 15], what exactly is the upper gasket?

 

Found the problem. It's where the top of the door rubs against the rubber weatherstrips. I put WD40 on it, let's hope it lasts.

 

dont use wd it goes away ,gm say's to use silicone grease on the seals

 

Okay thanks! We should have that here in my dad's shop.