'09 Hemi and I've had a bad squeal since I got it. Dealer has taken it in twice. First time they just replaced the belt. Second time they replaced the tensioner. Both times the squeal went away for a day or two then came back. After this last time I stopped at Harbor Freight and got a stethoscope. I stuck it against the idler pulley and, plain as day, it sounded like that was definitely where it was coming from. Since it was only $15 I ran up to O’Reilly’s and picked up a new Gates pulley. Not only did the noise not go away, I think it is actually worse. I haven’t had a chance to check and see if that’s where the sound is still coming from. What is going on?
Video is from before the "fix" but sound is the same:
Your dealer should be taking care of that for you, especially if that is your original complaint described on the repair order from the get go. They have not fixed the squeal even after replacing parts. It could be anything from the bearing in your alternator to your bearing in your AC compressor. You sound like you're close to finding the culprit. Just process of elimination. Great luck man and let us know what your end result is.
That's why I took it back to them in the first place. It was there during the test drive and the salesman told me it would be fixed. If it was just the idler pulley I could have done that pretty easily myself but if it ends up being something a lot more costly then I don't want to let them off the hook.
My truck has done the same thing since the day I bought it (used).. Dealer said it was the belt and replaced it, but the noise came back shortly after. Mine is more apparent in the damp though. I'm interested to see your end results. Good luck
RCX 2.5" level - 1.5" Zone Body Lift - 295/65/20 Trail Grapplers - 20x10 Moto Metal 970 - Debadged - 18" Magnaflow and Y-Pipe - S&B CAI - DiabloSport Intune DCX
Just a follow-up. They took it back for the third time the other day. I've had it back about a week now and so far the noise has not come back. On the paperwork this time it shows they put on another new belt but this time it says they also aligned the PS pulley.
my GMC squealed like a banshee every time it shifted at higher RPM's. fought it over and over, finally narrowed it down to an alignment issue between the different rotating elements. Belt wasn't really contacting with all it's surface area, causing uneven tension. Took some grinding and some creative shim work using old pop cans, but it did fix it. we also roughed up the pulley surfaces a bit to add more grab
mind you - this was one of those - here hold my beer adventures. I don't have the truck anymore, but it was that way for a good 20,000 miles, who knows what, if any, of longevity of the components was affected
there's a belt dressing spray out there - have you ever tried that stuff?
Mine squeals in the morning when it's cold, I have the belt and new idler bearing but haven't got around to changing them in a year...of course, now that the cold is here, I just park further up on the street so I don't have to hear it