I bought used 2 yrs ago, 22,000miles on it. It purrs like a kitten shifts thru the gear well. My ? : I went up to my brothers house over the forth of July driveing down a fairly steep driveway. My motorhome being 40' there was little room to turn around and drive back up the driveway.So I put it in reverse and started backing up the incline. About half way up, it would not go any further, with the peddle to the floor. Tried it twice, with no luck. I check the fluid level, it was normal,trans gage read normal not over heated etc. Still learning ,first home that we ever had ? Is this the nature of the beast, maybe a safe guard built into the Allison? I managed to turn it around, and drive right up the incline with little effort, about a 1/4 of a peddle, and went on my way. Has this happen to anyone else?? Thanks