This thread should be pinned. Thank you for starting it and sharing important information. Did my own research. Very vague and inconclusive, which I find unsettling. From what I gather, the service bulletin claims that some RHOs have the ability to exceed the electronic speed limit, which could compromise the integrity of the tires, being that they have a 118 MPH rating.
BUT THE MANUFACTURER'S SOLUTION TO THIS PROBLEM IS TO QUIETLY TAKE 20 MPH OF PERFORMANCE OUT OF THESE VEHICLES. To me, that doesn't make sense. 240 trucks were released with a 'computer glitch' that allows them to 'wander beyond' the electronically limited 118 MPH governor. Our concern is the tires, not some dirty secret with our truck. To address this problem, we've released a TSB that detunes performance by 20 MPH.
I'm not trying to offend anyone or stress anyone out but, to me, this sounds like it could be a cover-up. If 239 vehicles were released with this ability to wander beyond the electronic speed limit, wouldn't the fix be to correct the glitch and lock them into the 118 MPH limit instead of throttling them back to 98 MPH? Something doesn't add up. Something smells rotten in Denmark.
It doesn't matter whether or not you INTEND to drive past 100 MPH or not. This should be unsettling and troubling to every owner or pre-owner of the vehicle. What if this is a cover-up and an omen of a major engine flaw in some of these vehicles? Who does it affect? How far does the quality control problem go?
Here's a scenario that is PURELY SPECULATION; NO FACT WHATSOEVER, just to make an important point. Some vehicles 'drift beyond' the electronic speed limit. POSSIBLE TRANSLATION: We've discovered faulty wrist pins in the engines of many of these vehicles. It's too expensive to recall them all and replace the engines so we will QUIETLY attempt to side-step the problem by blaming it on computers and tires and apply an undocumented duct tape solution that detunes the trucks, takes away 20% performance and minimizes the chances of the engines coming apart due to wrist pin failure.
The VIN identifies which trucks have this problem and which do not - IF YOU ALREADY HAVE YOUR TRUCK!!! If, like me, your truck is still being built...YOU HAVE NO WAY TO KNOW. The recall only addresses those trucks that are out. Stellantis CERTAINTLY is not going to reveal which trucks currently being built have this problem!!!
What can we do? You can pull the plug or you can wait until your truck is delivered and take it for a test drive, BEFORE SIGNING, and drive it to 100 MPH to see if it bounces off of a duct-tape speed limiter or continues to 105, 110, etc. Great way to break-in a brand new truck, huh? And...your dealership won't have a problem with that, will they? Haha! Are we having fun yet??
I don't know what do to. This is above my pay grade.