jp1170

I've go a 2013 SCREW XLT 4x4 with 6,000 miles on it and here recently i've noticed the humming/vibration sound that many have experienced in the '11 and '12 year models that seems to be a vacuum pump issue. I'm pretty sure that they moved the vacuum pump for the '13 year model but wasn't sure if it's a new style pump or the same pump just in a different location? The sound seems to be coming from the passenger side down behind the firewall which i'm pretty sure is close to where the pump was relocated to. I'm dropping it off at the dealer next Monday to have them look at it but just trying to get as much info from others that may be experiencing this problem so i don't get the run around from the dealer because it doesn't do it all the time. The only times that i have noticed it is when i put the truck in park and i'm on a slight incline which i thought may have something to do with the brake assist start that is on it at first when i heard it, but then i started listening for it and i can hear the pump kick on just before it's about to shift gears and kicks off just after the truck shifts. It's some what erratic when it does this as it doesn't do it all the time and i've driven the truck in temperatures anywhere from 0 degrees Fahrenheit up to 50 degrees and it did it some in both weather conditions. Any feedback is appreciated as i'm hoping to get this fixed soon, it's not causing any issues but just sounds horrible especially for a brand new truck.