Fuel Hoses Lines/piping And Fittings problems of the 2008 Chevrolet Malibu

My 2008 chevy Malibu ltz has transmission problems. It stalls out when you go from park to the 1st gear, than from 1st gear to 2nd and from 2nd gear to 3rd gear. What happens is the transmission stalls out long enough to cause an accident or other type of incident. This problem happens most of the time and has been going on now for six months. It has stalled out climbing vail pass, the eisenhower tunnel climb and descent and I-70 est of I-15 in utah through the high elevations. This vehicle intermittently goes into neutral and than re-engages. Furthermore, when the car shifts from 2nd to 3rd it goes into a stall and the rpm's increase to around 4000 before it actually changes into the next gear. . . The other severe problem is while driving my car through a very long tunnel on 9-17-09; the fuel gage went from full to empty (no fuel) and low fuel lamp came on. On-star said "system has an electrical problem". The cause: fuel vapor line hanging up fuel level sender causing gauge to read inaccurately j7815 (code p0461) found in bulletin #09-06-04-007a.