No Reverse, slipping gears

GM replaced power steering pump and housing under special coverage policy (AKA class action suit) but said steering gear still leaking. Is replacing the only solution??

whenever brake is applied this rubbing sound occurs. brakes work fine.

The mileage is 120000km now

The mechanic said it was coincidence I need to know if it could be from something he did when replacing the rack

2009 Acadia. 16000 miles. Cranks strong but will not fire. Has run and started perfectly. Came home and gas light came on as coming down the street, but there should have been enough gas at that point that it would not register as out of gas. Added gas from gas can but still will not fire. Driveway inclines probably 15 percent so is parked "uphill"