2007 Nissan Pathfinder fuel system problems

I request that the DOT NHTSA investigate manufacturer defects in 2007 nissan pathfinders cooling system and transmission as unexpected failure relates to driver safety. My 2007 pathfinder with 90,000 miles caused a major collision with a deer as the transmission began to fail. Driving home, at around 40MPH, up a hill (engine under load @ 2,200-2,500 RPM) the whole car began suddenly to "shudder"- similar to the feeling/ sound of riding over highway rumble strips.

2007 nissan pathfinder's gas gauge does not accurately register gas tank level. It shows empty when not empty and vice versa. The reading will go from an 1/2 full to empty in a blink of an eye.. It is extremely difficult to know how much gas is in the car. The service engine light stays on constantly. The dealer's service dept is charging $500 to fix the gas gauge. I believe it is a manufacturing defect and should be covered by nissan.