Exhaust Brake on '99 Monaco Windsor
I have a new to me '99 Windsor. There is a switch on the floorboard for the Exhaust Brake activation. Nothing happens when I press it . No indicator light comes on and no downshift of the transmissi...
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Actually, all Allison's I have worked on will only cut out of exhaust brake mode as you descend through 2nd gear (lower speeds in second gear). I have been on several 15% plus downgrades and second gear lockup (higher engine speeds in 2nd gear) work just fine.
