2007.5-2010 GM 6.6L DURAMAX LMM BANKS POWER 55449 BRAKE W/ SWITCH 2007.5-2010 GM 6.6L DURAMAX LMM TOP OF THE HILL... NOW WHAT?You've crested that big hill and need to start thinking about slowing down. What do you do? Ride your service brakes and hope they don't overheat? Downshift the transmission and possibly... MSRP: Was: Now: $729.00 Add to Cart The item has been added