Hello. I am selling my 2000 GMG w3500 box truck. It was running well until the brake lines began to leak. After replacing all the brake lines, the truck will no longer shift into any gears and a buzzing sound is heard in the dash. The shifter will go into neutral or park, but won't drive when placed into D or R. I'm not sure what is the exact problem, but I no longer want to spend any more money on this truck since it has already been replaced with a new truck. The engine starts and runs great, without problems. Truck has less than 50,000 original miles. Includes hydraulic lift gate. Gasoline, not diesel. Missing title. Bill of sale only.