Coming to a stop sign. The coach made a sudden stop like someone had their foot on the break and then release. The result from that was when I start my engine and press D it shows 6 gear, not first gear to start. I can downshift manually and upshift manually but not automatically. Also, the engine brake will not light up or work. I had to drive home manually shifting gears as to not start off in 6th gear from a dead stop. I tried to rest the Allison but did not rest. Any suggestion.
Marquis C12 Allison 4000
