Kind of a long story... scroll down for TLDR.
I have a 2011 XLT Ecoboost that was experiencing the 50-60 MPH shudder when going up hills in cruise. I also had a warped rotor with only 6000 miles so I figured it was time to get some warranty work done. Unfortunately, the dealership that my uncle works at is no longer Ford authorized (Lincoln pulled their plug last year) so I had to take it somewhere else for warranty work.
I told the dealer about the warped rotor and the shudder. The service manager took me for a ride to try to replicate the shudder, which of course didn't happen when he was driving it. I asked them to check for an updated PCM anyway and gave them the info I found here about looking for misfires and doing the relearn (thanks Bob_Mac
)... 4 hours later I got a call letting me know that my truck was done - They turned the front rotors and there was nothing they could do about the shudder. They said my truck already had the latest version of the PCM.
They were closing and I wasn't in the mood to fight so I just took the keys and left. The brakes were fixed, but the shudder seemed worse!
A week later I was having dinner with the family and I mentioned the problem to my Uncle. He went to get his work laptop and PCM USB thingy and sure enough, there WAS a newer PCM version. We flashed the truck and did the relearn which seems to have fixed the issue with the shudder. Now - here comes the interesting part.
After fixing the truck we were poking around in the PCM to see what goodies we could find and there was a section for GPS. The GPS was also showing up as active in Park, Neutral, & Reverse but not Drive. I do NOT have the navigation package in my truck, but apparently there is still a GPS module hidden somewhere in there.
Uncle is a Ford mechanic who brought his PCM equipment home to help me fix my 2011 XLT EB Shudder problem. After updating with the latest PCM (which fixed the shudder problem) we were poking around and noticed a section for GPS
. I do NOT have navigation in my truck, but apparently there is a GPS module somewhere in the vehicle. The PCS says that the GPS module is only active when the truck is in Park, Neutral, or Reverse... It seems to shut off when in Drive
It looked like there may also have been an option for a Remote Engine Shutoff, so maybe this is stuff that can be turned on for fleet trucks?
Has anyone else seen or heard of this?!?! Is there any way I can tap into this GPS? OR should I be worried about someone watching me?
I wish I would have snapped a pic when we had the laptop plugged in. I don't remember what section of the PCM the GPS was under.