I’ll try to keep my update brief since I don’t have much to add, just want to relay my results.Though mine went away on its own. Oh, wait, its winter and my windows are up all the time. Still making the squeal on start. Have not been able to investigate further. No new posts for a while so it seems like everyone has given up like me. Anybody make any discoveries?
After three trips to the dealer with the “we couldn’t duplicate the noise”, I finally started the truck right in front of the service manager first thing in the morning. He declared that was “normal” and wouldn’t do any further investigation.
I then contacted a Ram service rep who promised me if a different dealership couldn’t fix the problem they would send a specialist to look at the truck. Another dealership and lost time at work they declared the truck was operating normal but did say they feel the noise is resonating through the exhaust. (No crap)
Back to the Ram rep and requested they send a specialist to look at the truck because I wouldn’t be satisfied until I knew what was causing the noise. Ram said they wouldn’t send anyone because the second dealership said the truck was operating normally. The second dealership started a 6.4 2500 that was sitting on their lot and it made the same racket on start up so that’s how they justified normal operation.
At this point I’m frustrated and extremely disappointed in Dodge and their customer service, poor service at the local level is just a given around here. I’ve driven Dodge trucks for almost 25 years and this is definitely my last. I’m glad the redesigned new model is ugly enough I won’t be tempted when I trade this thing in.
Sorry I couldn’t offer a better answer but looks like I’m not alone. I would be curious to know if any one has done exhaust work that eliminates the noise.
Take care, Tim