I have a 1999 Blazer and for some reason air is coming through the driverside door. Any help on how to fix it and the cost for parts along with how to do the job would be greatly appreciated.

Thanks

 

Where is it coming from? Around the door seal? Around the window track? Through the switch panel?

 

Given we have little info to guess on Im going to say the bottom rubber seal on the door has came of or you have a rust hole letting the air in.Can you give us some history about vehicles body condition and in general what are the air is coming from.

 

its is coming from the door jam. I have done some research and it seems as if the door jam pins needs to be replaced,

 

You mean the hinge pins. That is very likely because that is a common issue with these vehicles. I found out it doesn't take much wear to cause water leaks. Only my top pin was bad & it caused a water leak.
Buy OEM pins & bushings. I bought a pin & bushing from Napa & the bushing didn't last. A friend is a body man & has been for 50 years & he says the same thing. He says the OEM fit much better than aftermarket. Since he works on this type of stuff & has done a great deal of paint & body work on high dollar classic cars over his career I'll believe him.