So much for the Range DFM disabler. The first module I purchased would not completely engage and “lock” onto the trucks “port”. They sent me a new module and a return label for the bad unit.
The new module clicked right into place, with the spring loaded catch positively engaging with the trucks port. OMG! After hooking the battery back up I attempted to start the truck and not only would it not even start, the instrument panel lit up like a Christmas tree. Every error and trouble light that thing is capable of showing was lit up. I tried multiple times to get the truck started. My first thought was, “shit, what have I done to my brand new truck!?”
For what it’s worth, I’ve personally removed multiple engines from vehicles and put them back in, so I’m pretty sure the problem wasn’t my mechanical ability or lack there of. I used the return label that Range sent me and returned both units. Thus far I’ve not received a credit back on my card. I’ll just chalk this one up to lesson learned.
And that lesson is to never buy GM DFM products again. Now I have a ticking time bomb that I’ll have to trade in prior to warranty expiration. And yes, I have been using L mode and paddle shifting to 9th gear (a pain in the ass every single time I use the truck) to supposedly prevent DFM from working, but as you know, the truck does not advise you when it is deactivating cylinders, so I don’t know with certainty that this hack is working.
