New dmax owner, but a bad start
Back in April I upgraded to a used 3/4 ton Chevy gasser. Awesome truck, but the 6.0 and 3.73 left a little to be desired when it came to hills, headwinds and anything above 3000' alt. So, decided a diesel was in future. Might as well do it now, while the gasser was worth more if I'm going to do it eventually anyhow.
Picked up a '16 2500 LT with the dmax. Love the truck. Empty I'm at 21mpg mixed driving, and the ride is even better than the 14 was. Really like it. Now the bad. About 40 miles into it, I parked, shut down and ran an errand. Came back out, start up, put it in reverse, I've got all indications I'm in reverse, but engine just revs. Back in drive pull forward try reverse again, it's all good. It does this three different times today. The last time, I revved it more and it jammed into gear and jumped back somewhat violently. Seems to only happen if it sits a few mins or more. Needless to say, it's day one, I'm irritated and in a loaner now. Very happy I was fortunate enough to be able to have the truck, but frustrated it had a problem right off. Also, I'm sure this will be a "could not duplicate" type thing.
Any dmax/Allison owners here ever experience anything similar? Trans fluid was full, and zero codes.
'16 2500HD Dmax