Car Stalling Problem

[RD1971]

2004 Cadillac SRX V-8 AWD 75,000 miles; The car starts normally and when put into gear the car stalls. Turning on the headlights or emergency flashers with the car running will also stall the car. Turning on the headlights or emergency flashers with the car off turns on all the dash board indicator lights as if the ignition was in the on position. All other accessories work fine. The check engine light has never come on. The car was towed on Thursday and the condition did not appear at the dealer, but appeared 4 hours later. A new battery was put into the car and the condition did not change.