'07 rumble always at 24/25mph when slowing down

[wsteele]

Yes, your thread is actually the freshest one on my mind and what I was thinking of when I wrote my reply. I wouldn't consider the dealer reflashing your PCM and killing the Diablo a "glitch". It's so one person can't buy a Diablo and use it on all of their friend's vehicles or sell it on FB or craigslist so 1,000 other people can tune their rides. It takes your stock PCM's info and stores it ("marrying" it to your vehicle) then uploads its custom tune. If the dealer sees this and reflashes it, even if just to rule out what they think may be a potential cause for whatever they're diagnosing, the Diablo won't recognize the PCM as it's "spouse" when you plug it back in to reflash your PCM. Since it's so simple to do, you can reflash the stock tune in the dealer parking lot. Them driving it from there and into the bay shouldn't present a situation for AFM to engage (slow speed, not up to temp, etc.). Of course, this would be dependent upon what it's at the dealership for as they may have to road test it. If you have a good relationship with them, have them type in all caps, highlight and circle on the service order instructions to NOT reflash the PCM under any circumstances without consulting with you first. To perform their full diagnostics on a particular system per their protocol, they may have to have a stock tune. Otherwise, they may refuse to work on it. The first scenario that comes to mind would be diagnosing a misfire. I'm sure you'd try to perform your due diligence to diagnose this on your own, perhaps using the help of this fine forum, before bringing it to a dealer. For them to track down an inexplicable misfire, they'd LOVE to point the blame at a faulty aftermarket tune right off the bat.

Yeah, I didn't think it was a glitch on their part, just a glitch in my plans.

Not being able to control what happens after I turn the keys over (not sure even the guys on the front desk have any control), I think if I go the AFM disable route, I will be moving away from my dealer. There are a couple of great shops nearby, not as cost effective, but when I need some heavy lifting, definitely can count on quality results and likely will work with me on SW. I am going to drop by my favorite of those tomorrow and have a talk.

 

[S1W99]

It should. You kinda jumped the gun on it, but there are some drawbacks to the Range that you might should be aware of:

1) If your area requires inspections and they need to plug into the OBDII port, you'll have to remove the Range and complete a number of drive cycles to satisfy readiness monitors before your vehicle will be ready for testing. The drive cycles could take a few days or a few weeks to complete. It may not cause any problems, but having a system that's already ailing sit dormant for a year then suddenly recommissioned (when you remove the Range for inspections/testing) just doesn't sit well with me.

2) Unless it has been resolved in soft- or firmware updates, the Range will need to be removed if the vehicle will be parked for extended periods (a week or so) to avoid draining the vehicle's battery.

3) If you can afford to have your vehicle down for a few days, you can send the PCM to a guy in Missouri to have the AFM turned off in the tune. This costs $50 plus shipping to him (return shipping is included in the $50). It wouldn't require anything to be plugged into the port and AFM would be permanently disabled. Emissions/inspections will not be affected. If you ever need to mechanically delete the AFM components (failing or failed lifter(s), etc.), then you wouldn't need any special tuning afterward to start and drive it since it has already been shut off in the tune. https://lt1swap.com/afm_delete.htm

Thank you sir, that is a great reply. I'm going to look into that but I don't know how to get the AFM unit however it is. The issue of having now is my gauges have all gone to zero the lights come on but all the gauges are in zero. Wtf?

 

[iamdub]

Thank you sir, that is a great reply. I'm going to look into that but I don't know how to get the AFM unit however it is. The issue of having now is my gauges have all gone to zero the lights come on but all the gauges are in zero. Wtf?

What do you mean you don't know how to get the AFM unit however it is?


So, you got the Range and plugged it in and all your gauges went dead?