Allison Transmission Workhorse Chassis
I have a 2003 Newmar Scottsdale (33') with an 8.1 GM engine and an Allison 1000 transmission, (34,000 miles). I was 250 miles away from home last weekend, stopped to get some gas, had to go up a small hill in the parking lot to get back onto the road. Stopped, gave it some gas to get up the hill and on the road. The transmission wasn't initially engaged, (it was in D), it suddenly lurched into gear (didn't make a grinding sound, more of a thud). I let off the gas, it slipped out of gear and I carefully let it roll back down the little hill. Put it in P, let it sit for a minute, put it back in D to go out another entrance (no hill). Transmission slipped a bit but got me out. The expressway was 2 miles away and I decided to get that far and decide to head N to a town with a repair shop or head home. I headed home; 250 miles, not another problem. Stopped about 50 miles into the trip and checked the transmission fluid (full, no smell, looked fine). I really don't want to get stuck on the road and I'm not sure I trust taking it to a mechanic (I can just hear it: "Sir, this transmission is shot, put a new one in for only $8,000"). BTW, I've put 7,000 miles on the RV, no problems with the engine or drive train. Any thoughts?