@JeffP What is the build date on your original rebel? Also, could you check the build dates on the trucks you're test driving? There was a suggestion in this thread "
STINKY 2019 Bighorn 1500 5.7 Hemi " that this smell was only from certain build dates. It looks like most people in that thread have October or November builds. Mine is October. Also, it looks like some have not had this smell immediately, but it has shown up after hundreds of miles of driving. If that is the case, I am not sure a test drive will be a guarantee the truck doesn't have the smell eventually. Hopefully someone figures out a specific component or cause. Like I said before, I believe my smell is going away and is not noticeable most days now, but if it doesn't, I would like to take a definitive solution to the dealer.