My idler pully is making a sqweeking sound. How hard is it to replace? And anybody have the part #?

Thanks

 

Or is it called the "drive belt tensioner"?

 

If you are talking about the pulley just under the alternator, then that is the tensioner.... You can pick one up at your local parts store for around 40 bucks for the assembly.. The pulley by itself is about half.... It take s about 10 minutes to change the tensioner.... The hardest part is jacking up the car, and placing jack stands.....

Its best to replace the tensioner/pulley assembly, than just the pulleys by itself....

 

thanks